ILI- 



145 



INA- 



ilia and ribs ; appl. several muscles 

 (anaf.). 



iliofemoral (Tl'iofgm'oral) a. [L. ilia, 

 flanks ; femur, thigh.] Pert, the 

 ilium and femur ; appl. a ligament 

 (anaf.). 



iliohypogastric (Tl'iohl'pogas'trik) a. 

 [L. ilia, flanks ; Gk. hypo, under ; 

 gaster, belly.] Pert, ilium and 

 lower anterior part of the abdomen ; 

 appl. a nerve (anaf.). 



ilioinguinal (il'ibin'gwlnal) a. [L. 

 ilia, flanks ; in%uen, the groin.] In 

 the region of ilium and groins ; 

 appl. a nerve (anaf.). 



illolumbar (il'Iolum'bar) a. [L. ilia, 

 flanks ; lumbus, loins.] In region 

 of ilium and loins ; appl. artery, 

 ligament, vein (anaf.). 



iliopectineal (Tl'fope'ktin'eal) a. [L. 

 ilia, flanks ; pecten, crest.] Appl. 

 an eminence marking the point of 

 union of ilium and pubis (anaf.). 



iliotibial (il'iotib'ial) a. [L. ilia, 

 flanks ; tibia, pipe.] Appl. a tract 

 or band of muscle at the lower end 

 of the thigh (anaf.). 



iliotrochanteric (il'iotrokanter'ik) a. 

 [L. ilia, flanks ; Gk. trochanter, a 

 runner.] Uniting ilium and tro- 

 chanter of femur ; appl. a ligament 

 (anaf.). 



ilium (Ilium) n. [L. ilium, flank.] 

 That part of the hip-bone supporting 

 the flank (anaf.) ; the dorsal bone, 

 articulating with the backbone, of 

 the pelvic arch (zoo/.). 



imaginal (imaj'inal) a. [L. imago, 

 image.] Pert, an imago ; appl. 

 larval discs, patches of cells from 

 which new organs develop (zool.). 



imago (Ima'go) n. [L. imago, image.] 

 The last or adult stage in insect 

 metamorphosis ; the perfect insect 

 (zool}. 



imbricate (im'brikat) a. [L. imbricare, 

 to tile.] Having parts overlying 

 each other like house-tiles ; appl. 

 scales, plates, etc. (zool.} ; bud- 

 scales, bracts, etc. (hot}. 



imitative (im'itativ) a. [L. imitari, 

 to imitate.] Appl. form, structure, 

 habit, colouring, etc., assumed for 

 protection (zool}. 



immaculate (fmak'ulat) a. [L. in, 

 not ; macula, spot.] Without spots 

 or marks of different colour. 



immunise (Tm'unlz, imu'nlz) v. [L. 

 immunis, free.] To render invul- 

 nerable to a toxin, usually by 

 injecting the toxin in small quanti- 

 ties at short intervals, without the 

 appearance of severe symptoms 

 (Phys.}. 



immunity (imu'nTt!) n. [L. immunis, 

 free from duty.] An organism's 

 resistance, natural or acquired, to 

 the onset of pathological conditions 

 from infection, natural or artificial, 

 by any of the micro-organisms 

 (phys}. 



imparidigitate (impar'idij'itat) a. [L. 

 impar, unequal ; digitus, finger.] 

 Having an odd number of digits 

 on a limb (zool}. 



imparipinnate (impar'ipin'at) a. [L. 

 impar, unequal ; pinna, wing.] Un- 

 equally pinnate ; pinnate with an 

 odd terminal leaflet (hot}. 



imperfect metamorphosis, see in- 

 complete. 



imperforate (ImpeVforat) a. [L. in, 

 not ; per, through ; foratus, bored.] 

 Not pierced ; appl. foraminifera 

 shells without fine pores in addition 

 to principal opening (zool.}. 



impervious (TmpeVvIus) a. [L. in, 

 not ; per, through ; via, way.] Not 

 permeable (biol} ; appl. nostrils 

 with a septum between the nasal 

 cavities (zool}. 



import (im'port) n. [L. importare, to 

 bring in.] A method of food- 

 ingestion in Amoeba, food being 

 drawn in on contact (phys}. 



impregnation (im'prggna'shun) n. [L. 

 impraegnare, to fertilize.] Trans- 

 ference of spermatozoa from male 

 to body of female. 



impression (impre'sh'on) n. [L. in, 

 into ; premere, to press.] An in- 

 dentation mark resulting from con- 

 tact of organs or pressure of one 

 on another, as those on the surfaces 

 of the liver, the rhomboid of the 

 clavicle, the trigeminal of the 

 temporal (anaf.). 



inantherate (Inan'thgrat) a. [L. in, 

 not ; Gk. antheros, flowery.] With- 

 out anthers (bot}. 



inarticulate (Tnartik'ulat) a. [L. in, 

 not ; articulatus, jointed.] Not 

 segmented (biol}. 



inaxon (inak'son) n. [Gk. is, fibre ; 

 K 



