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(skwăl′ēn) An unsaturated carbohydrate present in shark-liver oil and some vegetable oils. It is an intermediate in the biosynthesis of cholesterol.

squam-, squamo-

[L. squama, scale (of a fish)] Prefixes meaning scale, squama.


(skwā′ mă) pl. squamae [L.] 1. A thin plate of bone. 2. A scale from the epidermis. SYN: squame.


(skwā′māt) [L. squama, scale] Scaly.


(skwām) [L. squama, scale] Squama (2).


(skwā″mō-sĕl′ū-lăr) [L. squama, scale, + cellula, little cell] Pert. to or having squamous cells.


(skwā″mō-kŏ-lŭm′năr) [″ + ″] Pert. to any tissue in which squamous epithelium abuts columnar epithelium.


(skwā-mō′să) pl. squamosae [L. scaly] 1. The squamous part of the temporal bone. 2. Scaly or platelike.


(skwā-mō″săl) [L. squama, scale] Squamous.


(skwā′mŭs) [L. squamosus] Scalelike.

square knot

SEE: under knot.

squash prep, squash preparation

The smearing or compressing of a thin tissue specimen between two slides before microscopic analysis. The specimen is placed flat on the first slide. The second slide is held at a right angle to the first and then dragged along the specimen, distributing it lengthwise along the first slide. The specimen is then fixed with alcohol and stained.

squatting position

A position in which the person crouches with legs drawn up closely in front of, or beneath, the body; sitting on one's haunches and heels.


An abnormal breath sound, a short wheeze or squeak, typically heard during inspiration in patients with interstitial lung disease or pneumonia.

squaw root

Blue cohosh.


A bottle made of a flexible, semirigid material that can be deformed by applying hand pressure to it. It is used to contain irrigating solutions, esp. those required in ophthalmology.

squeeze test

(skwēz) An assessment of anterior foot pain with an examining hand applied around the forefoot. When applied pressure elicits tenderness, Morton neuroma is often present.


superconductive quantum interference device.


(skwĭl) [Gr. skilla, a sea onion] An ancient remedy now rarely employed in medical practice, with therapeutic and toxic effects that mimic those of digoxin. It is derived from plants of the ...

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