STE- 



304 



STI- 



stereos, solid ; plasma, something 

 moulded.] The more solid part of 

 protoplasm (cf. hygroplasm) ; a 

 vesicular substance filling inter- 

 septal spaces of certain Corals 

 (zool.}. 



stereospondylous (ster'eospon'dllus) 

 a. [Gk. stereos, solid ; sphondylos, 

 a vertebra.] Having the vertebrae 

 each fused into one piece; cf. temno- 

 spondylous (zool.}. 



stereotaxy (steVeotak'si) n. [Gk. 

 stereos, solid ; taxis, arrangement.] 

 The mechanical reaction to con- 

 tinuous contact with a solid 

 (Phys.}. 



stereotropism (stereot ropizm) n. 

 [Gk. stereos, solid ; trope, a turning.] 

 Tendency of minute organisms to 

 attach themselves to solid objects ; 

 thigmotaxis (phys.}. 



sterigma (sterlg'ma) n. [Gk. sterigina, 

 a support.] A slender filament 

 arising from the basidium, and 

 giving rise to spores by abstriction 

 (bot.}. 



sterile (steYil) a. [L. sterilis, barren.] 

 Incapable of propagation ; appl. a 

 plant unable to bear fruit, a neutral 

 flower, a seed unable to germinate 

 (hot.}. 



sterilize (ster'illz) v. [L. sterilis, 

 barren.] To render incapable of 

 conveying infection, or of repro- 

 ducing the species (pkys.}. 



sternal (steYnal) a. [Gk. sternon, the 

 breast] Pert the sternum, or a 

 sternite ; appL ribs united to the 

 sternum (zool.}. 



sternebrae (ster'nebre) n. plu. [Gk. 

 sternon, the breast ; ebra, on analogy 

 of verte&ra.'] Divisions of a seg- 

 mented sternum or breastbone 

 (zool.}. 



sternite (steVnIt) n. [Gk. sternon, the 

 breast.] A ventral plate of an 

 Arthropod segment, carrying legs 

 and tracheal openings (zool.}. 



sternoclavicular (ster'noklavik'ular) 

 a. [Gk. sternon, breast ; L. clavicu- 

 lum, a small key.] AppL the 

 articulation between sternum and 

 clavicle (anat.}. 



sternocostal (ster'nokos'tal) a. [Gk. 

 sternon, breast ; L. costa, a rib.] 

 Pert, sternum and ribs ; appL liga- 

 ment, surface of heart (anat.}. 



sternokleidomastoid (ster'nokli'do- 

 mas'toid) a. [Gk. sternon, breast ; 

 kleis, key ; niastos, breast ; eidos, 

 resemblance.] AppL an oblique 

 neckmusclestretchingfrom sternum 

 to mastoid process, also an artery in 

 the same region (anat}. 



sternoscapular (bter'nb'skap'ular) a. 

 [Gk. sternon, breast ; L. scapula, 

 shoulder-blade.] AppL a muscle 

 connecting sternum and scapula 

 (anat.}. 



sternotribe (steVnotrlb) a. [Gk. 

 sternon, breast ; tribein, to rub.] 

 AppL flowers with fertilizing ele- 

 ments so placed as to be brushed 

 by the breasts of visiting Insects 

 (A*), 



sternum (ster'num) .. [L. sternum, 

 the breast-bone.] The breast-bone 

 of vertebrates, specialized in Birds 

 with a carina for wing-muscle 

 attachment ; the ventral plate of a 

 typical Arthropod segment (zool.}. 



sterraster (steras'ter) n. [Gk. sterros, 

 solid ; aster, star.] An aster with 

 numerous actines soldered together 

 by silica (zool.}. 



sterrula (ster'ula) n. [Gk. sterros, 

 solid.] The solid free-swimming 

 larva of Alcyonaria, the stage 

 preceding the planula (zool.}. 



stichidium (stikid'mm) n. [Gk. 

 stichos, a row.] A tetraspore re- 

 ceptacle of some Algae (bot.}. 



stigma (stig'ma) n., stigmata (stig'- 

 mata) plu. [Gk. stigma, a pricked 

 mark.] The portion of the pistil 

 on which the pollen falls (bot.} 

 spots of brilliant colour with lens- 

 like body, the eye-spots, of some 

 Protozoa ; an Arthropod spiracle ; 

 apertures connected with the 

 tracheae of Insects ; a coloured 

 wing spot of certain butterflies and 

 other insects ; a gill-slit of Tunicates 

 (zool.}. 



stigmatic (stigmat'ik) a. [Gk. stigma, 

 a pricked mark.] AppL a lid cell 

 of an archegonium (bot.}. 



stigmatiferous (stigmatlf'erus) a. 

 [Gk. stigma, a pricked mark ; L. 

 ferre, to carry.] Stigma-bearing. 



stigmatiform (stlgmat'fform) a. [Gk. 

 stigma, a pricked mark ; L. forma, 

 shape.] Resembling a stigma ; 

 stigmatoid. 



