sou 



376 



SEG 



scutellum, a small shield from 

 scutum, a shield), in bot., the 

 smaller cotyledon on the outside 

 of the embryo of wheat, placed 

 lower down than the other more 

 perfect cotyledon ; a round flat- 

 tened lichen-shield, with a rim 

 derived from the thallus : scut- 

 elliform, a., skut-el'- It-form (L. 

 forma, shape); also scutellate, 

 a., skut-Zl'ldt, shaped like a 

 little shield. 



scutiform, a. , slcut'-l-form (L. scut- 

 um, a shield ; forma, shape), in 

 bot. , applied to the peculiar leaf 

 in Rhizocarpese ; having the form 

 of a shield. 



scybala, n., sib'-al'd (Gr. skubalon, 

 dung, ordure), the faeces or con- 

 tents of the bowels, when passed 

 in hard small masses, like marbles 

 or the excretions of sheep, denot- 

 ing an unhealthy and costive 

 habit. 



scyphus, n., sif'us, scyphi, n. 

 plu., slf-l (L. scyphus, Gr. skuph- 

 os, a cup or goblet), in bot., the 

 cup of a Narcissus ; a funnel- 

 shaped corolla ; the funnel- 

 shaped expansion of the podetia 

 in some Lichens : scyphiferous, 

 a., sif'if-er-us (L. fero, I bear), 

 bearing scyphi, as some Lichens. 



Scytosiphon, n., sit'-o-sif'd'n (Gr. 

 skutos, skin, leather ; siphon, a 

 tube), a genus of plants, Ord. 

 Algae or Hydrophyta, so named 

 because their fronds are coriaceous 

 and tubular : Scytosiphon filum, 

 fil'-urn (L. filum, a string, a cord), 

 a species attaining in the British 

 seas a length of 40 or 50 feet. 



sebaceous, a., seb-d'-shus (L. seb- 

 um, tallow or suet), containing 

 or secreting fatty matter: seba- 

 ceous glands, glands at the roots 

 of hairs, which secrete an oily 

 matter for their lubrication. 



secreting, a., sZ-kret'-mg (L. secret- 

 us, severed, separated), separat- 

 ing or producing from the blood, 

 or its constituents, substances 

 different from the blood itself; 



in plants, separating substances 

 from the sap : secretion, n., 

 se-kresh'-un, one of the substances 

 separated from the blood, etc., 

 such as saliva, bile, and urine ; a 

 separated portion of a nutritive 

 fluid different from it in qualities: 

 secretory, a., s&kret'dr-i, per- 

 forming the office of secretion. 



sectile, a., sek'-til (L. sectilis, that 

 may be cut, cleft from s'eco, I 

 cut), that may be cut or sliced, as 

 with a knife ; in bot., cut into 

 small pieces : section, n., s$k- 

 shtin, a part separated from the 

 rest ; a division. 



secular, a., sek'-ul-ar (L. seculdris, 

 of or belonging to a generation 

 from seculum, a generation), in 

 geol, applied to great natural 

 processes, whose results become 

 appreciable only after the lapse of 

 ages. 



secund, a., sek'-und (L. secundus, 

 second, next), in bot., all turned 

 to one side, as flowers or leaves 

 on a stalk arranged on one side 

 only : secundine, n., seWund-in, 

 in bot., the second coat of the 

 ovule, lying within the primine ; 

 in anat., the foetal membranes 

 collectively. 



sedative, a., s~ed'-at'iv (L. sedatus, 

 settled, composed), diminishing 

 or allaying irritability or pain : 

 n. , a medicine which diminishes 

 or allays irritability or pain. 



Sedum, n., sed'>um (L. sedes, a 

 seat), a genus of plants, Ord. 

 Crassulacese, found growing upon 

 stones, rocks, walls, and roofs of 

 houses, admirable for ornamenting 

 rock-work: Sedum acre, ak'rZ 

 (L. acris or acre, biting, sharp), 

 the biting Stone -crop, having 

 acrid properties. 



segment, n., seg'm&nt (L. seg- 

 mentum, a piece cut off from 

 seco, I cut), in bot., the division 

 of a frond : segmentation, n. , 

 s$g f >m%nt-d f -shun, the division or 

 splitting into segments or por- 

 tions : segmenting, n., sey-menl' 



