spore(n = noun.plant) - a small usually single-celled asexual reproductive body produced by many nonflowering plants and fungi and some bacteria and protozoans and that are capable of developing into a new individual without sexual fusion; "a sexual spore is formed after the fusion of gametes"
is a kind of agamete
has particulars: basidiospore, endospore, carpospore, chlamydospore, conidiospore, conidium, oospore, resting spore, tetraspore, zoospore, fern seed, pollen, microspore, macrospore, megaspore, aeciospore, ascospore, zygospore

1.  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, Oöspore, Resting spore, Sphærospore, Swarmspore, Tetraspore, Zoöspore, and Zygospore." [1913 Webster]

2.  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. [1913 Webster]

spore, n.
1 a specialized reproductive cell of many plants and micro-organisms.
2 these collectively.

Etymology:
mod.L spora f. Gk spora sowing, seed f. speiro sow

N  powderiness, pulverulence, sandiness, efflorescence, friability, powder, dust, sand, shingle, sawdust, grit, meal, bran, flour, farina, rice, paddy, spore, sporule, crumb, seed, grain, particle, limature, filings, debris, detritus, tailings, talus slope, scobs, magistery, fine powder, flocculi, smoke, cloud of dust, cloud of sand, cloud of smoke, puff of smoke, volume of smoke, sand storm, dust storm, pulverization, comminution, attenuation, granulation, disintegration, subaction, contusion, trituration, levigation, abrasion, detrition, multure, limitation, tripsis, filing, mill, arrastra, gristmill, grater, rasp, file, mortar and pestle, nutmeg grater, teeth, grinder, grindstone, kern, quern, koniology, powdery, pulverulent, granular, mealy, floury, farinaceous, branny, furfuraceous, flocculent, dusty, sandy, sabulous, psammous, arenose, arenarious, arenaceous, gritty, efflorescent, impalpable, lentiginous, lepidote, sabuline, sporaceous, sporous, pulverizable, friable, crumbly, shivery, pulverized, attrite, in pieces.

brand spore, spore case, spore mother cell, spore sac