noun

definition

A paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing.

definition

Something that envelops; a wrapping.

definition

A bag containing the lifting gas of a balloon or airship; fabric that encloses the gas-bags of an airship.

definition

A mathematical curve, surface, or higher-dimensional object that is the tangent to a given family of lines, curves, surfaces, or higher-dimensional objects.

definition

A curve that bounds another curve or set of curves, as the modulation envelope of an amplitude-modulated carrier wave in electronics.

definition

The shape of a sound, which may be controlled by a synthesizer or sampler.

definition

The information used for routing a message that is transmitted with the message but not part of its contents.

definition

An enclosing structure or cover, such as a membrane; a space between two membranes

definition

The set of limitations within which a technological system can perform safely and effectively.

definition

The nebulous covering of the head or nucleus of a comet; a coma.

definition

An earthwork in the form of a single parapet or a small rampart, sometimes raised in the ditch and sometimes beyond it.

Examples of envelopes in a Sentence

As she shut the drawer, the envelopes on the top of the desk caught her attention.

Portions of the fructification may be preserved in small envelopes attached to the sheets.

In mathematics, the "caustic surfaces" of a given surface are the envelopes of the normals to the surface, or the loci of its centres of principal curvature.

Still using stamps and envelopes.

By the suppression of the verticil of the stamens, or of the carpels, flowers become unisexual or diclinous, and by the suppression of one or both of the floral envelopes, monochlamydeous and achlamydeous flowers are produced.

Slag or Cinder, a characteristic component of wrought iron, which usually contains from 0.20 to 2.00% of it, is essentially a silicate of iron (ferrous silicate), and is present in wrought iron simply because this product is made by welding together pasty granules of iron in a molten bath of such slag, without ever melting the resultant mass or otherwise giving the envelopes of slag thus imprisoned a chance to escape completely.

The old fortress consisted of the town enceinte, the castle (situated on high ground and fortified by several concentric envelopes), and the entrenched camp, a hollow enclosed by continuous lines, the salients of which were the castle, Fort La Justice and Fort La Miotte.

During the World War he issued, in 1915, an order barring unneutral envelopes and cards from the mails, and after America became a belligerent he instituted a censorship designed to suppress treasonable and seditious newspapers.

Make sure that the printer's paper adjust lever is set to 0 for regular paper and + for envelopes or thicker media.

Cynthia crossed to the desk and returned with a hand full of cards and envelopes.

In the stricter sense, physical geography is that part of geography which involves the processes of contemporary change in the crust and the circulation of the fluid envelopes.

Differences of temperature and atmospheric pressure must disturb this equilibrium, but the movements of both ocean and atmosphere lead to a high degree of uniformity in both envelopes as regards their gaseous constitutions.

Nearly all patterns are the developments of the envelopes of geometrical solids of regular or irregular outlines, few of plane faces; when they are made up of combinations of plane faces, or of faces curved in one plane only, there is no difference in dealing with thin sheets or thick plates.

The shapes of all polygonal and all cylindrical and conical forms are obtained by simple development - that is, the envelopments of these bodies are marked out on a flat plane, and when cut, are bent or folded to give the required envelopes.

As regards the mode of action of agglutinins, Gruber and Durham considered that it consists in a change in the envelopes of the bacteria, by which they swell up and become adhesive.

The oviducts may have diverticula serving as receptacles for the spermatozoa (in cases where internal impregnation takes place), and may be provided with glands secreting envelopes or shells around the eggs.

The oil contained in cells in this cavity, when refined, yields spermaceti, and the thick covering of blubber, which everywhere envelopes the body, produces the valuable sperm-oil of commerce.

The relations m 2 - 25-3K = n 2 - 2r-3c, = m+n, present themselves in the theory of envelopes, as will appear farther on.

Other important products were foundry and machine-shop products ($ 1, 749, 0 54); paper goods ($1,481,427, not including envelopes, which had an additional value of almost $700,000); cars, automobiles, firearms (besides the Federal arsenal there is the Smith & Wesson revolver factory); and printing and publishing ($1,165,544).

The fifth book contains properties of normals and their envelopes, thus embracing the germs of the theory of evolutes, and also maxima and minima problems, such as to draw the longest and shortest lines from a given point to a conic; the sixth book is concerned with the similarity of conics; the seventh with complementary chords and conjugate diameters; the eighth book, according to the restoration of Edmund Halley, continues the subject of the preceding book.

Of these whorls the two internal, forming the sporophylls, constitute the essential organs of reproduction; the two outer whorls are the protective coverings or floral envelopes.

The floral envelopes are rarely multiplied.

The pistil or gynoecium occupies the centre or apex of the flower, and is surrounded by the stamens and floral envelopes when these are present.

Bucolic pictures were screwed to the walls as if someone might want to steal them and shampoo came not in little bottles but in hard-to-open plastic envelopes.

The class teacher is somewhat absent-minded and is not very careful when he puts their reports into envelopes at the end of ' term.

We cannot accept cardboard, envelopes or wrapping paper in our recycling banks.

We cannot accept Telephone Directories, Yellow Pages or envelopes Do not put cardboard in the paper recycling container.

Eva also owned four small envelopes, each bearing the royal cipher, which she claimed once held private letters from the Queen.

Progeny vaccinia and human cytomegalovirus particles utilize early endosomal cisternae for their envelopes.

Tesco stores also provide pre-paid envelopes to send your old phones for recycling.

The results envelopes are handed out at the College by a senior examiner or a member the Examinations Section staff.

Notes on cards in copperplate handwriting in scented envelopes delivered by discreet footmen are how it should be.

Peter Mack bounds down the aisle of the Arts Center and envelopes Tony Howard in a manly hug.

Manila envelopes to be dealt with at home.

This includes newsprint, magazines, envelopes and fax paper.

The beans are wrapped in large green plantain leaves to form envelopes.

Never praised for her handwriting, the last of the envelopes is barely readable.

Simply send a requisition for the number of envelopes or pens you need.

There is also a large number of people who arrive in one-stop shops with official forms from every possible source in unopened brown envelopes.

Many discount supermarkets sell value envelopes or you may find that you can get away without for cards that you hand deliver.

The plasma membrane envelopes the particle and buds off to form an intracellular vesicle, the phagosome.

However, envelopes cannot be recycled at the kerbside due to the adhesive on them.

The cards will come packed in dozens with self-sealing envelopes.

Computer skills (word processing and spreadsheets), as well as photocopying and stuffing envelopes are always useful.

Or help out behind the scenes with office tasks, writing newsletters, publicizing events or stuffing envelopes.

Mary used a template to cut old and fold magazine pages into tiny envelopes.

The netting envelopes the whole car seat, but allows cool breezes in to keep baby from getting too hot.

Envelopes of different sizes often become mixed together, so match your card to the right envelope.

Have your transaction, including any deposit envelopes, ready before you get to the ATM.

Business buyers will receive gift cards in envelopes that are ready to ship out.

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