OOP 



290 



OPH 



oophoridium, n., d-of'-dr-id'-i-urn, 

 oophoridia, n. plu., o-of'-dr-id' 

 I'd (Gr. 65n, an egg ; phor%6, I 

 bear), spore- cases of club mosses 

 containing large spores (macro- 

 spores) in their interior, which 

 macrospores or megaspores have 

 a cellular prothallium or endo- 

 thallium in their interior bearing 

 archegonia. 



oophoritis, n. plu., 6>oj'6r-itf-is 

 (Gr. 68n, an egg ; phoreo, I bear), 

 non-puerperal inflammation of the 

 ovaries, which may be either fol- 

 licular or parenchymatous. 



oosphere, n., o'-d-sfer (Gr. otin, an 

 egg ; Gr. sphaira, L. sphcera, a 

 globe, a ball), in bot., a germinal 

 cell produced in the archegonia 

 in Fungi. 



oosporangia, n. plu., d-ds'por-anj' 

 I'd (Gr. don, an egg ; spora, 

 seed; anggos, a vessel), in bot., 

 sacs or spore-cases in some Algse. 



oospore, n., o'ds'por, oospores, n. 

 plu. , 6'-8s'porz (Gr. don, an egg ; 

 spora, seed), in bot., a fertilized 

 spore in Fungi ; spores produced 

 in an oogonium. 



^otheca, n., d'-d'theWft, oothecae, 

 n. plu., d'-o-thes'-e (Gr. oSn, an 

 egg ; theke, a case), in bot. , some- 

 times applied to thecse of Ferns. 



operculum, n. ,o -perk' til-urn, operc- 

 ula, n. plu., O'perk'ul'd (L. 

 operctilum, a lid or cover from 

 operiS, I cover over), in bot., a 

 cap, lid, or cover, as in certain 

 seed vessels ; applied to the separ- 

 able parts of the thecse of Mosses; 

 in zool. , the horny or shelly plate, 

 developed in certain Molluscs 

 upon the hinder part of the foot, 

 which close the aperture of the 

 shell when the animal is retracted 

 within it, as in the periwinkle ; 

 the gill- cover, or bony flap, cover- 

 ing and protecting the gills in 

 many fishes : opercular, a. , 

 o-perk'ul'cir, having a lid or 

 cover ; of the nature of a lid or 

 cover : Operculata, n. plu. , 

 o-perk'-ul'dt'-a, a division of 



pulmonate Gasteropoda, in which 

 the shell is closed by an operc- 

 ulum : operculate, a. , o-perkf-ill- 

 at, in bot. , opening by a lid ; 

 having a lid or cover, as a caps- 

 ule. 



Ophidia, n. plu., df-td'.i-a, also 

 ophidians, n. plu., df-id'-i-ariz 

 (Gr. ophis, a serpent ; dphidion, 

 a small serpent), the Order of 

 reptiles comprising the snakes : 

 ophidian, a., of-id'-i-an, of or 

 belonging to the Serpent Order. 



Ophiobatrachia, n. plu., of f 4-o- 

 bdt-rdk'i'O, (Gr. ophis, a serpent, 

 ophidwn, a small serpent ; bat- 

 rdchos, a frog), applied, some- 

 times, to the Order of snake- like 

 Amphidians, as the Csecilise : 

 Ophiomorpha, n. plu., df-i-d- 

 m6rf'-d (Gr. morphe, shape), the 

 Order of Amphibia which includes 

 the Csecilise : ophiomorphous, a. , 

 -morf-us, having the form of a 

 serpent. 



Ophiocaryon, n., of-i-o-kar'-i-dn 

 (Gr. ophis, a serpent ; karuon, a 

 nut), a genus of plants, Order 

 SapindaceaB : Ophiocaryon para- 

 doxum, pdr'-d-doks'-um (Gr.pdrd- 

 doxos, marvellous, strange), the 

 snake-nut tree of Demerara so 

 named from the embryo resem- 

 bling a coiled-up snake. 



OphioglossacesB, n. plu., #/" o. 

 glos-sd'se-e, also OphioglosseaB, 

 n. plu., of't-d-glds'-se'e (Gr. ophis, 

 a serpent ; glossa, a tongue), a 

 Sub-order of the Filices or Ferns, 

 distinguished by the absence of a 

 ring to the spore-cases, and by 

 the straight, not circinate, verna- 

 tion of their fronds : Ophioglos- 

 sum, n., of'i'd-glds'snm, a genus 

 of Ferns called Adders' tongues 

 so named from the resemblance 

 of their leaves to an adder's 

 tongue : Ophioglossumvulgatum, 

 vulg'dt'um (L. vulgdtum, made 

 common), the fern called Adders' 

 tongue. 



Ophiuroidea, n. plu., tif'i'Ur'dyd' 

 d (Gr. ophis, a snake ; oura, a 



