| AECIOSPORE | • aeciospore n. (Botany) A binucleate spore of a rust fungus, formed in a chainlike series in an aecium. • æciospore n. Obsolete spelling of aeciospore. • AECIOSPORE n. a spore produced in an aecidium, also AECIDOSPORE. |
| ARCHESPORE | • archespore n. (Biology) A group of cells from which microspores or megaspores develop. • ARCHESPORE n. the cell or group of cells in a sporangium that gives rise to spores. |
| AZYGOSPORE | • azygospore n. A agametic zygospore. • AZYGOSPORE n. a thick-walled spore produced by parthenogenesis in certain algae and fungi. |
| BLASTOPORE | • blastopore n. (Embryology) The opening into the archenteron. • BLASTOPORE n. the opening of the archenteron in the gastrula that develops into the anus of some animals, also BLASTOPOR. |
| CARPOSPORE | • carpospore n. A kind of spore formed in the conceptacles of red algae. • CARPOSPORE n. a kind of spore formed in the conceptacles of red algae. |
| MACROSPORE | • macrospore n. One of the specially large spores of certain flowerless plants, as Selaginella, etc. • MACROSPORE n. a spore giving rise to a female gametophyte. |
| MICROSPORE | • microspore n. (Botany) The smaller of the two spores produced by plants; compare megaspore. • microspore n. (Zoology) One of the numerous tiny spore-like elements produced through the encystment and subdivision of many monads. • MICROSPORE n. a spore giving rise to a male gametophyte. |
| PYCNOSPORE | • pycnospore n. (Botany) Synonym of stylospore, Synonym of pycniospore. • PYCNOSPORE n. a conidium produced in a pycnidium, also PYCNIDIOSPORE. |
| TELIOSPORE | • teliospore n. A teleutospore. • TELIOSPORE n. the thick-walled resting spore of rusts and smuts from which the basidium arises. |
| TETRASPORE | • tetraspore n. (Biology) Any of the four asexual spores produced by a sporangium. • TETRASPORE n. a nonsexual spore, one of a group of four regularly occurring in red seaweeds. |
| UREDOSPORE | • uredospore n. (Botany) The thin-walled summer spore produced during the uredo stage of certain rusts. • UREDOSPORE n. the thin-walled summer spore which is produced during the so-called Uredo stage of certain rusts, also UREDINIOSPORE, UREDIOSPORE. |