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spore

Syllabification: spore
Pronunciation: /spôr
 
/

Definition of spore in English:

noun

Biology
1A minute, typically one-celled, reproductive unit capable of giving rise to a new individual without sexual fusion, characteristic of lower plants, fungi, and protozoans.
Example sentences
  • Grain mold fungi also produce spores capable of aerial dispersal in the field as well as within a grain storage bin.
  • Bunt fungi survive as resting spores on contaminated seed.
  • Many questions concerning toxicity and allergenicity have been raised about corn contaminated with the spores of this fungus.
1.1 Botany (In a plant exhibiting alternation of generations) a haploid reproductive cell that gives rise to a gametophyte.
Example sentences
  • When contaminated seeds are planted, bunt spores germinate in the presence of moisture and infect the wheat seedlings.
  • After landing on a host plant, spores germinate and produce a germ tube that grows across the leaf surface.
  • A spore can infect a plant and cause a new lesion which will produce spores in 7-10 days.
1.2 Microbiology (In bacteria) a rounded resistant form adopted by a bacterial cell in adverse conditions.
Example sentences
  • In the production of dry milk these bacterial spores are able to survive the spray-drying process.
  • A concentration of just 5 parts per million was adequate to eradicate 50,000 spores under laboratory conditions.
  • While the spores are not extremely long lived, they could survive this form of movement.

Origin

mid 19th century: from modern Latin spora, from Greek spora 'sowing, seed', from speirein 'to sow'.

Definition of spore in:

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