| serous membrane | <anatomy, pathology> One of the delicate membranes of connective tissue which line the internal cavities of the body. Synonym: serosa. (28 May 1998) |
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| serous meningitis | Acute meningitis with secondary external hydrocephalus. (05 Mar 2000) |
| serous otitis | Inflammation of middle ear mucosa, often accompanied by accumulation of fluid, secondary to eustachian tube obstruction. Synonym: secretory otitis media. (05 Mar 2000) |
| serous pericardium | <anatomy> A double membranous sac which envelops and protects the heart. The layer in contact with the heart is referred to as the visceral layer, the outer layer in contact with surrounding organs is the parietal pericardium. In between the two layers is the pericardial space. (27 Sep 1997) |
| serous pleurisy | Pleurisy accompanied by serous exudation. Synonym: serous pleurisy, wet pleurisy. (05 Mar 2000) |
| serous retinitis | Oedema of the retina; an inflammation of the inner layers of the retina. Synonym: simple retinitis. (05 Mar 2000) |
| serous synovitis | Synovitis with a large effusion of nonpurulent fluid. (05 Mar 2000) |
| serous tunic | serous membrane |
| serovaccination | A process for producing mixed immunity by the injection of a serum, to secure passive immunity, and by vaccination with a modified or killed culture to acquire active immunity later. (05 Mar 2000) |
| serovar | A subdivision of a species or subspecies distinguishable from other strains therein on the basis of antigenic character. Synonym: serotype. Origin: sero-+ variant (05 Mar 2000) |
| serozyme | Clotting Factor II. Origin: Gr. Thrombos = cloth in (18 Nov 1997) |
| serpens | <astronomy> A constellation represented as a serpent held by Serpentarius. Origin: L. See Serpent. Source: Websters Dictionary (01 Mar 1998) |
| serpent | 1. <zoology> Any reptile of the order Ophidia; a snake, especially a large snake. The serpents are mostly long and slender, and move partly by bending the body into undulations or folds and pressing them against objects, and partly by using the free edges of their ventral scales to cling to rough surfaces. Many species glide swiftly over the ground, some burrow in the earth, others live in trees. A few are entirely aquatic, and swim rapidly. See Ophidia, and Fang. 2. A subtle, treacherous, malicious person. 3. A species of firework having a serpentine motion as it passess through the air or along the ground. 4. <astronomy> The constellation Serpens. 5. A bass wind instrument, of a loud and coarse tone, formerly much used in military bands, and sometimes introduced into the orchestra; so called from its form. <chemistry> Pharaoh's serpent, mercuric sulphocyanate, a combustible white substance which in burning gives off a poisonous vapor and leaves a peculiar brown voluminous residue which is expelled in a serpentine from. It is employed as a scientific toy. <botany> Serpent cucumber, any species of African serpents belonging to the family Dendrophidae. Origin: F, fr. L. Serpens, -entis (sc. Bestia), fr. Serpens, p. Pr. Of serpere to creep; akin to Gr, Skr. Sarp, and perhaps to L. Repere, E. Reptile. Cf. Herpes. Source: Websters Dictionary (01 Mar 1998) |
| serpent ulcer of cornea | A severe, creeping, central, suppurative ulcer often due to pneumococci. Synonym: pneumococcal/suppurative keratitis, serpent ulcer of cornea. (05 Mar 2000) |
| serpent-tongued | <zoology> Having a forked tongue, like a serpent. Source: Websters Dictionary (01 Mar 1998) |