Word Finder - sheath

definition

A holster for a sword; a scabbard.

definition

(by extension) Anything that has a similar shape to a scabbard that is used to hold an object that is longer than it is wide.

synonyms

• case
• casing
• cover
• covering
• envelope

definition

The base of a leaf when sheathing or investing a branch or stem, as in grasses.

definition

The insulating outer cover of an electrical cable.

definition

One of the elytra of an insect.

definition

A tight-fitting dress.

definition

The foreskin of certain animals (for example, dogs and horses).

definition

A condom.

Extracting the cell phone from its sheath, she dialed Alex.

Carmen showered and donned a simple sheath dress and didn't ask Alex what they should wear.

She replaced her knife in its sheath and looked around for more bodies.

The epithem is frequently surrounded by a sheath of cuticularized cells.

The right sheath C (outer process of the ninth abdominal segment-9) is shown in connexion with the guide B formed by the inner processes of the 9th segment.

She flipped the phone shut and put it back in the sheath.

Deidre watched him retrieve his sword and replace it in its sheath.

Anteriorly it finally communicates with the lacunae just mentioned, which surround the oesophagus, bathe the posterior lobes of the brain, pass through the nerve ring together with the proboscidian sheath, and are generally continued in front of the brain as a lacunar space in the muscular tissue, one on each side.

In transverse sections the nephridia can be shown to be generally situated in the region limited by (I) the proboscidian sheath, (2) the upper wall of the intestine, (3) the muscular body-wall.

This, being folded and placed in its sheath, is attached by both ends to the head, so that the melted liquor runs into both openings at the same time.

In all tsetse-flies the proboscis in the living insect is entirely concealed by the palpi, which are grooved in their inner sides and form a closely fitting sheath for the piercing organ; the base of the proboscis is expanded beneath into a large onion-shaped bulb, which is filled with muscles.

The kodzuka, or handle of a little knife implanted into the sheath of the short sword or dagger, was, also of metal and engraved with like care.

A basic sleeveless sheath works well for all seasons.

It is surrounded by (I) a thin-walled, smaller-celled hydrom mantle; (2) an amylom sheath; (3) a leptom mantle, interrupted here and there by starch cells.

As the aerial stem is traced down into the underground rhizome portion, these three mantles die out almost entirelythe central hydrom strand forming the bulk of the cylinder and its elements becoming mixed with thick-walled stereids; at the same time this central hydromstereom strand becomes three-lobed, with deep furrows between the lobes in which the few remaining leptoids run, separated from the central mass by a few starchy cells, the remains of the amylom sheath.

In other cases it does not differ histologically from the parenchyma of the rest of the cortex, though it is often distinguished by containing particularly abundant starch, in which case it is known as a starch sheath.

As a bundle is traced towards its blind termination in the mesophyll the peridesmic stereom first disappears, the sieve-tubes of the phloem are replaced by narrow elongated parenchyma cells, which soon die out, and the bundle ends with a strand of tracheids covered by the phloeotermic sheath.

Bill straight, pointed, with simple sheath.

In others, it lies in the coelom, often surrounded by a special and occasionally rather thick sheath.

Ia, frons; b, clypeus (the pointed labrum beneath it); II, mandible; III, first maxilla; (a, base; b, sheath; c, piercer), III', inner view of sheath; IV, second maxillae forming rostrum (b, mentum; c, ligula).

In the posterior retractor the longitudinal fibres become united into one bundle, which, as noticed above, is inserted in the wall of the sheath.

The proboscis broken off and expelled is generally reproduced, the posterior ribbon-like end of this reproduced portion again fusing with the walls of the sheath.

Like the body, the proboscis is hollow, and its cavity is separated from the body cavity by a septum or proboscis sheath.

This formula is important in connexion with the capacity of electric cables, which consist of a cylindrical conductor (a wire) enclosed in a conducting sheath.

This may be done by the method suggested by Arago in 1828, introduced by Aime in 1841 and again suggested by Glaisher in 1858, of sealing up the whole instrument in a glass tube exhausted of air; or, less effectively, by surrounding the bulb alone with a strong outer sheath of glass.

P. Petersii has a transversely divided basidium as in Auriculariaceae, but the basidia are surrounded with a peridium-like sheath.

The claws are large, strongly compressed, sharp, and exhibit the retractile condition in the highest degree, being drawn backwards and upwards into a sheath by the action of an elastic ligament so long as the foot is in a state of repose, but exerted by muscular action when the animal strikes its prey.

By longitudinal segmentation we have a leaf formed consisting of sheath, stalk and blade; or one or other of these may be absent, and thus stalked, sessile, sheathing, &c., leaves are produced.

This sheath is comparatively rare in dicotyledons, but is seen in umbelliferous plants.

In sedges the sheath forms a complete investment of the stem, whilst in Leaf grasses it is split on one side.

The divergence is expressed left to right, the other is right to left, in the altered laminae or of the enlarged petiolary sheath, or of stipules, as in the fig and magnolia, or of one or two of these parts combined.

Within this is usually a sheath of connective tissue, which surrounds a layer of circular muscles; the latter may be split up into separate bundles, but more usually form a uniform sheet.

A little later the breaking down of the whole axon, both axis cylinder and myelin sheath alike, seems to occur simultaneously throughout its entire length distal to the place of severance.

The complex fat of the myelin becomes altered chemically, while the other components of the sheath break down.

This death of the sheath as well as of the axis cylinder shows that it, like the axis cylinder, is a part of the nerve cell itself.

The characteristic of this family - as represented by the prongbuck - is that the sheath of the horns is forked, and shed annually, or every few years.

The sheath of ice surrounding the bulb must be sufficiently continuous to prevent escape of heat, but it must not be so solid as to produce risk of strain.

First, its dorsal wall (which is grooved to form the hyperpharyngeal groove) is closely adherent to the sheath of the notochord; and secondly, the pharynx is attached through the intermediation of the primary bars.

In it are carried, by literati and merchants, the pen-case and a roll of paper; its voluminous folds are used as pockets; by the bazaar people and villagers, porters and merchants servants, a small sheath knife is struck in it; while by farrashes, the carpet-spreader class, a large khanjar, or curved dagger, with a heavy ivory handle, is carried.

But irritation may be produced by numerous other causes besides this - such as a decayed tooth, diseased bone, local inflammations in which nerves are implicated, by some source of pressure upon a nerve trunk, or by swelling of its sheath in its passage through a bony canal or at its exit upon the surface.

The branches are numerous and in some species spiny; the narrow, often short, leaf-blade is usually jointed at the base and has a short stalk, by which it is attached to the long sheath.

Long before any clear ideas as to the relations of Schizomycetes to fermentation and disease were possible, various thinkers at different times had suggested that resemblances existed between the phenomena of certain diseases and those of fermentation, and the idea that a virus or contagium might be something of the nature of a minute organism capable of spreading and 1 Cladothrix dichotoma, for example, which is ordinarily a branched, filamentous, sheathed form, at certain seasons breaks up into a number of separate cells which develop a tuft of cilia and escape from the sheath.

When the swollen wall is dense and regular in appearance the term " capsule " is applied to the sheath as in Leuconostoc. Secreted pigments (red, yellow, green and blue) are sometimes deposited in the wall, and some of the iron-bacteria have deposits of oxide of iron in the membranes.

The ferric hydroxide accumulates in the sheath, and gradually passes into the more insoluble ferric oxide.

They are eminently dry-country plants (xerophytes); the narrow leaves are protected from loss of water by a thick cuticle, and have a well-developed sheath which embraces the stem and forms, with the sheaths of the other leaves of the rosette, a basin in which water collects, with fragments of rotting leaves and the like.

Peculiar hairs are developed on the inner surface of the sheath by which the water and dissolved substances are absorbed, thus helping to feed the plant.

In the cases of branching just cited the branches break directly through the sheath of the leaf in connexion with which they arise.

They consist of two distinct portions, the sheath and the blade.

The sheath is often of great length, and generally completely surrounds the culm, forming a firm protection for the internode, the younger basal portion of which, including the zone of growth, remains tender for some time.

It serves to prevent rain-water, which has run down the blade, from entering the sheath.