*spore*

n. [ Gr. 'anh`r, 'andro`s, a man + &unr_; a seed. ] (Bot.) A spore of some algæ, which has male functions. [ 1913 Webster ]

n. [ Gr. &unr_; priv. + isospore. ] (Biol.) A sexual spore in which the sexes differ in size; -- opposed to isospore. [ Webster 1913 Suppl. ]

n. same as archesporium.
Syn. -- archesporium. [ WordNet 1.5 ]

n. [ Gr. &unr_; joint + E. spore. ] (Bacteriol.) 1. A bacterial resting cell, -- formerly considered a spore, but now known to occur even in endosporous bacteria. [ Webster 1913 Suppl. ]

2. one of the small conidia occurring arranged in chains in certain fungi. Called also oidium. [ PJC ]

-- Ar`thro*spor"ic Ar*thros"po*rous a. [ Webster 1913 Suppl. ]

n. [ Ascus + spore. ] (Bot.) One of the spores contained in the asci of lichens and fungi. [ See Illust. of Ascus. ] [ 1913 Webster ]

n. [ Basidium + spore. ] (Bot.) A spore borne by a basidium. -- Ba*sid`i*o*spor"ous a. [1913 Webster]

(Bot.) One of several spores growing in a series or chain, and produced by one of the fungi called brand. [ 1913 Webster ]

n. [ Gr. karpo`s + -spore. ] (Bot.) A kind of spore formed in the conceptacles of red algæ. -- Car`po*spor"ic a. [1913 Webster]

n. form genus of imperfect fungi lacking pigment in the spores and conidiophores.
Syn. -- genus Cercosporella. [ WordNet 1.5 ]

n. a thick-walled asexual resting spore of certain fungi and algae. [ WordNet 1.5 ]

n. in more recent classifications superseded by the order Fucales.
Syn. -- class Cyclosporeae. [ WordNet 1.5 ]

n. [ From Gr. &unr_; a scattering; dia` through, asunder + &unr_; to sow, scatter like seed: cf. F. diaspore. ] (Min.) A hydrate of alumina, often occurring in white lamellar masses with brilliant pearly luster; -- so named on account of its decrepitating when heated before the blowpipe. [ 1913 Webster ]

n. [ Endo- + spore. ] (Bot.) The thin inner coat of certain spores. [ 1913 Webster ]

n. [ Pref. epi- + spore. ] (Bot.) The thickish outer coat of certain spores. [ 1913 Webster ]

n. [ Exo + spore. ] (Biol.) The extreme outer wall of a spore; the epispore. [ 1913 Webster ]

n. (Biol.) (a) One of the spores produced by an isosporous organism. (b) A zygospore. [ Webster 1913 Suppl. ]

n. [ Macro- + spore. ] (Bot.) One of the specially large spores of certain flowerless plants, as Selaginella, etc. [ 1913 Webster ]

n. [ Macro- + zoospore. ] (Bot.) A large motile spore having four vibratile cilia; -- found in certain green algae. [ 1913 Webster ]

n. [ Micro- + spore. ] (Bot.) One of the exceedingly minute spores found in certain flowerless plants, as Selaginella and Isoetes, which bear two kinds of spores, one very much smaller than the other. Cf. Macrospore. [ 1913 Webster ]

n. [ Micro- + zoospore. ] (Bot.) A small motile spore furnished with two vibratile cilia, found in certain green algae. [ 1913 Webster ]

n. [ Gr. w, 'o`n an egg + &unr_; a seed. ] (Bot.) (a) A special kind of spore resulting from the fertilization of an oosphere by antherozoids. (b) A fertilized oosphere in the ovule of a flowering plant. [ 1913 Webster ]

n. (Bot.) The outer covering of a spore. [ 1913 Webster ]

n. [ Gr. faio`s dusky + E. spore. ] (Bot.) A brownish zoospore, characteristic of an order (Phæosporeæ) of dark green or olive-colored algæ. -- Phæ`o*spor"ic a. [1913 Webster]

n. [ Pseudo- + spore. ] (Bot.) A peculiar reproductive cell found in some fungi. [ 1913 Webster ]

n. [ Gr. &unr_;&unr_;&unr_; a cord + E. spore. ] (Bot.) One of several spores arranged in a chain as in certain algae of the genus Callithamnion. [ 1913 Webster ]

n. Same as Spermospore. [ 1913 Webster ]

n. [ Spermo- + spore. ] (Physiol.) The male germinal or seminal cell, from the breaking up of which the spermoblasts are formed and ultimately the spermatozoids; a spermatospore. Balfour. [ 1913 Webster ]

n. [ Gr. &unr_;&unr_;&unr_;&unr_; sphere + E. spore. ] (Bot.) One of the nonsexual spores found in red algae; a tetraspore. [ 1913 Webster ]

n. [ Gr. &unr_; a sowing, seed, from &unr_; to sow. Cf. Sperm. ] 1. (Bot.) (a) One of the minute grains in flowerless plants, which are analogous to seeds, as serving to reproduce the species. [ 1913 Webster ]

☞ Spores are produced differently in the different classes of cryptogamous plants, and as regards their nature are often so unlike that they have only their minuteness in common. The peculiar spores of diatoms (called auxospores) increase in size, and at length acquire a siliceous coating, thus becoming new diatoms of full size. Compare Macrospore, Microspore, Oospore, Resting spore, Sphaerospore, Swarmspore, Tetraspore, Zoospore, and Zygospore. [ 1913 Webster ]

(b) An embryo sac or embryonal vesicle in the ovules of flowering plants. [ 1913 Webster ]

2. (Biol.) (a) A minute grain or germ; a small, round or ovoid body, formed in certain organisms, and by germination giving rise to a new organism; as, the reproductive spores of bacteria, etc. (b) One of the parts formed by fission in certain Protozoa. See Spore formation, belw. [ 1913 Webster ]

Spore formation. (a) (Biol) A mode of reproduction resembling multiple fission, common among Protozoa, in which the organism breaks up into a number of pieces, or spores, each of which eventually develops into an organism like the parent form. Balfour. (b) The formation of reproductive cells or spores, as in the growth of bacilli. [ 1913 Webster ]

n. 1. (Bot.) One of innumerable minute, motile, reproductive bodies, produced asexually by certain algae and fungi; a zoospore. [ 1913 Webster ]

2. (Zool.) One of the minute flagellate germs produced by the sporulation of a protozoan; -- called also zoospore. [ 1913 Webster ]

n. [ Gr. &unr_; completion + E. spore. ] (Bot.) The thick-celled winter or resting spore of the rusts (order Uredinales), produced in late summer. See Illust. of Uredospore. [ 1913 Webster ]

n. [ Tetra- + spore. ] (Bot.) A nonsexual spore, one of a group of four regularly occurring in red seaweeds. -- Tet`ra*spor"ic a. [1913 Webster]

v. t. To raise with a spar, or piece of wood, used as a lever. [ Obs. ] [ 1913 Webster ]

Give me a staff that I may underspore. Chaucer. [ 1913 Webster ]

n. (Bot.) The thin-walled summer spore which is produced during the so-called Uredo stage of certain rusts. See (in the Supplement) Uredinales, Heterœcious, etc. [ 1913 Webster ]

n. [ Zoo- + spore. ] [ 1913 Webster ]

1. (Bot.) A spore provided with one or more slender cilia, by the vibration of which it swims in the water. Zoospores are produced by many green, and by some olive-brown, algae. In certain species they are divided into the larger macrozoospores and the smaller microzoospores. Called also sporozoid, and swarmspore. [ 1913 Webster ]

2. (Zool.) See Swarmspore. [ 1913 Webster ]