Definition of spore in English:

spore

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.

    • ‘Many questions concerning toxicity and allergenicity have been raised about corn contaminated with the spores of this fungus.’
    • ‘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.’
    • ‘At flowering, the fungus grows through the floral tissue and forms masses of spores in place of healthy seed.’
    • ‘It reproduces prolifically and produces spores at all stages of its life.’
    embryo, bud, nucleus, seed, spore, egg, ovum
    View synonyms
    1. 1.1Botany (in a plant exhibiting alternation of generations) a haploid reproductive cell that gives rise to a gametophyte.
      • ‘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.’
      • ‘When contaminated seeds are planted, bunt spores germinate in the presence of moisture and infect the wheat seedlings.’
      • ‘The gametophyte is haploid, that is, each cell contains a single complete set of chromosomes, and arises from the germination of a haploid spore.’
      • ‘When infected flowers or leaves are plucked, a grayish-white cloud of fungal spores can usually be seen.’
    2. 1.2Microbiology (in bacteria) a rounded resistant form adopted by a bacterial cell in adverse conditions.
      • ‘It is heat-sensitive and dies as it dries, so is a much less attractive weapon than anthrax spores, which are many thousands of times more resistant.’
      • ‘In the production of dry milk these bacterial spores are able to survive the spray-drying process.’
      • ‘While the spores are not extremely long lived, they could survive this form of movement.’
      • ‘A concentration of just 5 parts per million was adequate to eradicate 50,000 spores under laboratory conditions.’
      • ‘The scientists' next step, for most pathogens, is to collect the spores.’

Origin

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

Pronunciation:

spore

/spôr/