SEG- 



287 



SEM- 



segregratlon (segrgga'shun) n. [L. se, 

 aside ; grex, flock.] In the Men- 

 delian sense, the dissociation of 

 characters from each other in the 

 course of the formation of germs, 

 the characters being called allelo- 

 morphic (Hoi.}. 



sejugous (sgj'oogus) a. [L. sex, six ; 

 jugum, a yoke.] With six pairs of 

 leaflets (bot.}. 



selenodont (sgle'nodont) a. [Gk. 

 selene, moon ; odous, tooth.] Appl. 

 molars when lengthened out an- 

 tero-posteriorly and curved (as in 

 sheep). 



selenotropism (selenot'ropTzm) n. 

 [Gk. selene, moon ; trope, a turn- 

 ing.] Tendency to turn towards 

 the moon's rays (bot.}. 



self -fertile, fertile by means of 

 its own male elements, said of a 

 flower (bot.}. 



self-fertilization, autogamy. 



self-mutilation, autotomy. 



self - pollination, transference of 

 pollen - grains from anthers to 

 stigmas of the same flower. 



self-sterile, not capable of fertiliza- 

 tion by its own male elements ; 

 appl. flowers (bot.} ; appl. hermaph- 

 rodite animals (zool.}. 



sella turcica (sel'5. tur'slka) n. [L. 

 sella, a seat ; turcicus, Turkish.] 

 A deep depression on the inner 

 surface of the sphenoid behind the 

 tuberculum sellae (anat.} ; a trans- 

 verse bar formed by union of 

 apodemes of posterior somites of 

 certain Decapods (zool.}. 



somatic (sematik) a. [Gk. sema, a 

 sign.] Functioning as a danger 

 signal, as certain colours or odours 

 in animals. 



semen (se'men) n. [L. semen, 

 seed.] The fluid secreted in the 

 testicles (zoo/.). 



semiamplexicaul (sgm'iamplek'- 

 sikol) a. [L. semi, half; amplecli, 

 to embrace ; caulis, stem.] Parti- 

 ally surrounding the stem (bot.}. 



semianatropous (sfim'Ianat'ropus) a. 

 [L. semi, half ; Gk. ana, up ; trope, 

 a turning.] With half- inverted 

 ovule (bot.}. 



semicaudate (sem'iko'dat) a. [L. 

 semi, half; cauda, tail.] With the 

 tail rudimentary (zool.}. 



semicircular (sgm'IseYkular) a. [L. 

 semi, half; circulus, a circle.] 

 Describing a half - circle ; appl. 

 the canals of the ear labyrinth 

 (anaf.}. 



semicomplete (sem'Ikomplet') a. [L. 

 semi, half; completus, filled.] In- 

 complete ; appl. metamorphosis 

 (zool.}. 



seminoret (sgm'Iflo'rgt) n. [L. 

 semi, half; flos, flower.] A semi- 

 floscule or ray of composite flowers 

 (bot.}. 



semiflosculous (sgm'iflos'kulus) a. 

 [L. semi, half; flosculus, a small 

 flower.] Having ligulate florets 

 (bot.}. 



semilocular (sem'ilSk'ular) a. [L. 

 semi, half; loculus, a small place.] 

 Appl. ovary with incomplete loculi 

 (bot.}. 



semllunar (sgm'ilu'nar, -loo-) a. [L. 

 semi, half; luna, moon.] Half- 

 moon shaped ; appl. ganglia, fascia, 

 valves (anat.} ; n., a carpal bone 

 (zool,}. 



semimembranosus (sfim'lmfim'brano'- 

 sus) n. [L. semi, half; membra- 

 nosus, membranous.] A thigh 

 muscle with a flat membrane- 

 like tendon at its upper extremity 

 (anat.}. 



semimetamorphosis (s&n'Imfitamor'- 

 fosls) n. [L. semi, half; Gk. meta- 

 morphosis, transformation.] Partial, 

 incomplete, or semicomplete meta- 

 morphosis (zool.\ 



seminal (sem'inal) a. [L. semen, 

 seed.] Pert, semen ; appl. the fluid 

 of the testicles, the duct or the 

 vesicle (zool.} ; appl. cotyledons 

 (bot.}. 



seminal receptacle, the spermatheca 

 or sac in Worms or Snails which 

 stores male elements till required 

 (zool.}. 



semination (sgm'fna'shun) . [L. 

 semen, seed.] Dispersal of seeds 

 (bot.}. 



seminiferous (sgmTnlf'erus) a. [L. 

 semen, seed ; ferre, to carry.] Se- 

 creting or conveying seed or seminal 

 fluid (zool.} ; bearing seed (bot.}. 



seminude (sgm'Inud) a. [L. semi, 

 half; nudus, naked.] With ovules 

 or seeds exposed (bot.}. 



seminymph (sgmlnlmf) n. [L. semi, 



