noun
definition
A bag or pouch inside a plant or animal that typically contains a fluid.
noun
definition
(games) A sacrifice.
example
Kasparov's queen sac early in the game gained him a positional advantage against Kramnik.
Examples of sacs in a Sentence
At the end of the airways are clusters of tiny air sacs.
Special sacs developed from the intersegmental septa lodge the developing ova and sperm.
The walls of the renal sacs are deeply plaited and thrown into ridges.
The early symptoms of trachoma include the development of follicles (small sacs) on the conjunctivae of the upper eyelids; pain; swollen eyelids; discharge; tearing; and sensitivity to light.
Spherical sacs, bearing forked spines, described by Williamson under the name of Zygosporites, are frequent, usually in an isolated state.
The sporangia were large pyriform sacs, shortly stalked, and borne in tufts on the branches of the fertile rachis, which developed no lamina.
Inside the lungs the bronchi divide into smaller and smaller airways until they end up as small air sacs called alveoli.
Air enters the rear air sacs, passes to the lung and then leaves via the front air sacs.
The Golgi apparatus is usually found close to the cell nucleus and consists of one or more stacks of membrane-bound cisternae (sacs ).
These could also develop into large pus filled sacs found primarily under the armpits and in the groin.
At the same time, carbon dioxide diffuses from the venous blood into the alveolar sacs.
The first tranche of 136 candidate SACs was sent to the EC in June 1995.
The synaptic terminal contains a number of small sacs, called synaptic vesicles.
These structures appear to be absolutely distinctive of the Oligochaeta, unless the sacs which contain sperm and open in common with the nephridia of Saccocirrus (see Haplodrili) are similar.
Segmentation is complete, a gastrula is formed, the blastopore closes, the archenteron gives off two coelomic sacs which, as far as is known, are unaffected by the super ficial segmentation of the body that divides the larva into three segments.
The peritoneum is no longer regarded with awe as inviolable; by modern methods, if not as manageable as other lymphatic sacs, it is at any rate accessible enough without considerable risk to life.
Cotton prints, fleece fabrics, blankets and snuggle sacs are also sold securely online.
The edible seeds (actually, these are "arils" - little juice sacs that surround the seeds) will sink to the bottom and the inedible white shell will float on the top.
My Pillow Place offers the mother of extra large floor cushions in its Jaxx Pillow Sacs.
Usually in August or September, the female produces up to three large, buff-colored egg sacs that are nearly as large as she, each containing between 300 and 1400 eggs.
She anchors the sacs to one side of her resting place near the center of her web to protect them from ants and other possible predators.
Alveoli-The tiny air sacs clustered at the ends of the bronchioles in the lungs in which oxygen-carbon dioxide exchange takes place.
Emphysema-A chronic respiratory disease that involves the destruction of air sac walls to form abnormally large air sacs that have reduced gas exchange ability and that tend to retain air within the lungs.
If the two fetuses have separate amniotic sacs, they can either share a placenta or have two separate placentas.
Congenital cystic adenomatoid malformation (CCAM) occurs when one or more lobes of the lungs develop into fluid-filled sacs called cysts rather than into normal lung tissue.
Congenital cystic adenomatoid malformation (CCAM)-A condition in which one or more lobes of the fetal lungs develop into fluid-filled sacs called cysts.
These bronchi branch into smaller air tubes that run within the lungs, leading to the small air sacs of the lungs (alveoli).
Inflammation of a tendon (tendinitis) and inflammation of one of the fluid-filled sacs that allow tendons to move easily over bones (bursitis) usually result from minor stresses that repeatedly aggravate the same part of the body.
Pulmonary edema can result from fluids leaking into the alveoli (air sacs) of the lung.
Babies born too soon have immature lungs that have not developed surfactant, a protective film that helps air sacs in the lungs to stay open.
Surfactant is normally produced in the fetal lungs in the last months of pregnancy, which helps the air sacs to open up at the time of birth so that the newborn infant can breathe freely.
Symptoms related to the fluid-filled sacs in the spine may be less responsive to surgery.
Female lice lay their eggs in sacs called nits that are about 0.04 in (1 mm) long and are glued to shafts of hair close to the scalp.
If a newborn infant is to breathe properly, the small air sacs (alveoli) at the ends of the breathing tubes must remain open so that oxygen in the air can get into the tiny blood vessels that surround the alveoli.
Sometimes a layer of fibrous tissue called a hyaline membrane forms in the air sacs, making it even harder for oxygen to get through to the blood vessels.
In a severe attack that lasts for some time, some of the air sacs in the lung may rupture so that air collects within the chest.
Ministries' distance learning program, and it is accredited through the Southern Association of Colleges and Schools Council of Accreditation and School Improvement (SACS CASI).
Other types of bags include ring flap clutches, sacs, mini-bags, tapered shoulder bags, pouchettes, backpack styles and draw-string purses.
The jellyfish is surrounded by tentacles that are covered in venomous sacs.
The spores, as in the heterosporous Pteridophyta, are of two kindsmicrospores (pollen grains) borne in microsporangia (pollen sacs) on special leaves (sporophylls) known as stamens, and macrospores (embryo-sac) borne in macrosporangia (ovules) on sporophylls known as carpels.
It is indeed only among the Eudrilidae that the enclosure of the ovaries in septal sacs is at all general.
These sacs are dealt with later under the description of the spermathecae, which function they appear to perform.
They are essentially spherical, pear-shaped or oval sacs opening on to the exterior but closed at the coelomic end.
In Polytoreutus, also, spermatophores have been found in these spermathecal sacs.
Sperm sacs generally occupying a good many segments and with simple interior undivided by a network of trabeculae.
Sperm ducts and atria as in Limicolae; egg sacs large; body wall thick; vascular system and nephridia as in Terricolae.
Testes, and occasionally ovaries, enclosed in sacs.
Sperm sacs generally limited to one or two segments with interior subdivided by trabeculae.
The two long ovarian sacs communicate with each other by a transverse bridge before uniting to form the terminal canal.
The large sacs which have been termed vagina are suggestive of the large coelomic spermathecae in Eudrilids, a comparison which needs, however, embryological data, not at present forthcoming, for its justification.