| aeciospore | (noun) spore of a rust fungus formed in an aecium | - |
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| archespore | (noun) primitive cell or group of cells from which a mother cell develops | Synonyms: archesporium |
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| arthrospore | (noun) one of a string of thick walled vegetative resting cells formed by some algae and fungi | - |
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| (noun) a body that resembles a spore but is not an endospore; produced by some bacteria | - |
| ascospore | (noun) sexually produced fungal spore formed within an ascus | - |
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| basidiospore | (noun) a sexually produced fungal spore borne on a basidium | - |
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| blastopore | (noun) the opening into the archenteron | - |
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| carpospore | (noun) a nonmotile spore of red algae | - |
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| chlamydospore | (noun) thick-walled asexual resting spore of certain fungi and algae | - |
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| conidiospore | (noun) an asexually produced fungal spore formed on a conidiophore | Synonyms: conidium |
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| endospore | (noun) a small asexual spore that develops inside the cell of some bacteria and algae | - |
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| extempore | (adjective) with little or no preparation or forethought | Synonyms: ad-lib, extemporaneous, extemporary, impromptu, off-the-cuff, offhand, offhanded, unrehearsed |
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| (adverb) without prior preparation | Synonyms: extemporaneously, extemporarily |
| macrospore | (noun) larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte | Synonyms: megaspore |
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| madrepore | (noun) corals having calcareous skeletons aggregations of which form reefs and islands | Synonyms: madriporian coral, stony coral |
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| megaspore | (noun) larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte | Synonyms: macrospore |
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| microspore | (noun) smaller of the two types of spore produced in heterosporous plants; develops in the pollen sac into a male gametophyte | - |
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| oospore | (noun) a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi | - |
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| polypore | (noun) woody pore fungi; any fungus of the family Polyporaceae or family Boletaceae having the spore-bearing surface within tubes or pores; the fruiting bodies are usually woody at maturity and persistent | Synonyms: pore fungus, pore mushroom |
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| pore | (noun) any small opening in the skin or outer surface of an animal | - |
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| (noun) a minute epidermal pore in a leaf or stem through which gases and water vapor can pass | Synonyms: stoma, stomate |
| (noun) any tiny hole admitting passage of a liquid (fluid or gas) | - |
| (verb) direct one's attention on something | Synonyms: center, centre, concentrate, focus, rivet |
| spore | (noun) 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 | - |
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| teliospore | (noun) a chlamydospore that develops in the last stage of the life cycle of the rust fungus | - |
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| tetraspore | (noun) one of the four asexual spores produced within a sporangium | - |
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| zoospore | (noun) an asexual spore of some algae and fungi that moves by means of flagella | - |
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| zygospore | (noun) a plant spore formed by two similar sexual cells | - |
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