NEC- 



205 



NEO- 



nectarlferous (nek'tarif'grus) a. [Gk. 

 nektar, nectar ; L. ferre, to carry.] 

 Producing or having nectar-secret- 

 ing structures (hot.}. 



nectarivorous (nek'tariv'orus) a. [Gk. 

 nektar, nectar ; L. vorare, to de- 

 vour.] Nectar-sipping ; appl. to 

 certain Insects (zoo/.). 



nectary (ngk'tari) n. [Gk. nektar, 

 nectar.] A group of sub-epidermal 

 cells of no definite position in a 

 flower, secreting a sweet substance ; 

 a nectar gland (dot.}. 



nectocalyx (ngk'toka'liks) ., necto- 

 calyces (neYtoka'lisez) plu. [Gk. 

 nektos, swimming ; kalyx, cup.] A 

 modified medusiform person adapted 

 for swimming purposes found as 

 part of a Siphonophore colony 

 (zoo/.). 



nectocyst (nek'toslst) n. [Gk. nektos, 

 swimming ; kystis, bladder.] The 

 cavity of a nectocalyx (zoo/.). 



nectophore (neVtofor) n. [Gk. nektos, 

 swimming ; pherein, to carry.] A 

 nectocalyx ; that portion of the 

 common coenosarc on which the 

 nectocalyces are borne (zoo/.). 



nectopod (neVtopod) n. [Gk. nektos, 

 swimming ; pous, foot.] An append- 

 age modified for swimming (zoo/.). 



nectosac (ngk'tosak) n. [Gk. nektos, 

 swimming ; L. saccus, sac.] A 

 nectocyst (zoo/.). 



nectosome (nk'tos6m) n. [Gk. nektos, 

 swimming ; soma, body.] The upper 

 or swimming part of a Siphono- 

 phore (zoo/.). 



nectozooid (nSk'tozo'oid) n. [Gk. 

 nektos, swimming ; zoon, animal ; 

 eidos, resemblance.] A nectocalyx 

 (zoo/.). 



negative tropism, a tendency to 

 move away from a source of stimu- 

 lus (phys.\ 



nekton (nek'ton) n. [Gk. nektos, 

 swimming.] The organisms swim- 

 ming about the surface of the sea 

 (Vol.). 



nemathecium (ngm'athe'sium, ngm'- 

 athe'shium) . [Gk. nema, thread ; 

 theke, box.] A protuberance on the 

 thallus of Thallophytes (hot.). 



nematoblast (ngm'atoblast) n. [Gk. 

 nema, thread ; blastos, bud.] Sper- 

 matocyte. 



nematocalyx (ngm'atoka'llks) n. [Gk. 



nema, thread ; kalyx, cup.] The 

 " Guard-polyp " of a Plumularian, 

 carrying nematocysts (zoo/.). 



nematocyst (ngm'atosist) n. [Gk. 

 nema, thread ; kystis, bladder.] A 

 stinging cell (zoo/.). 



nematogene (nfim'atojen) n. [Gk. 

 nema, thread ; genos, birth.] Appl. 

 the phase of Dicyema when its 

 vermiform embryos escape from 

 the parent by perforating the body 

 wall (zoo/.). 



nematogone (nSm'atogon) n. [Gk. 

 nema, thread ; gonos, offspring.] A 

 thin-walled propagative cell in cer- 

 tain Mosses (oof.). 



nematophore (nem'atofor) n. [Gk. 

 nema, thread ; pherein, to carry.] 

 A nematocalyx (zoo/.). 



nematopnorous(nm'a.t6f'6rus) a. [Gk. 

 nema, thread ; pherein, to carry.] 

 Pert, a nematophore (zoo/.). 



nematozooid (nem'atozo'oid) n. [Gk. 

 nema, thread ; zoon, animal ; eidos, 

 resemblance.] A defensive zooid 

 in a Hydrozoan (zoo/.). 



nemorose (ngm'oros) a. [L. nemus, 

 woodland with pasture.] Inhabiting 

 open woodland places (dot.). 



Neo-Darwinism, a revival of Dar- 

 win's doctrine of natural selection 

 as the chief factor in evolution, and 

 of non-transmissibility of acquired 

 characters. 



neogamous (neog'amus) a, [Gk. neos, 

 young ; gamos, marriage.] Appl. 

 forms of Protozoa exhibiting pre- 

 cocious association of gametocytes 

 (zool.\ 



Neo-Lamarckism, a revival of 

 Lamarck's doctrine of evolution, 

 that inherited acquired characters 

 formed the inception of specific 

 differences. 



Neolithic (ne'olith'Ik) a. [Gk. neos, 

 young ; lithos, stone.] Pert, that 

 age following on the Palaeo- 

 lithic (pal.\ 



neomorph (ne'omorf) . [Gk. neos, 

 young ; morphc, form.] A struc- 

 tural variation from type (dioL). 



neomorphosis (ne'omor'fosis) n. [Gk. 

 neos, young ; morpkosis, change.] 

 Regeneration in the case where 

 the new part is unlike anything in 

 the body (oio/.). 



neonychium (neonTk'Ium) n. [Gk. 



