[mahy-kruh-pahyl] /ˈmaɪ krəˌpaɪl/

Zoology. any minute opening in an ovum through which a spermatozoon can enter, as in many insects.
Botany. the minute orifice or opening in the integuments of an ovule.
a small opening in the integuments of a plant ovule through which the male gametes pass
a small pore in the shell of an insect’s eggs through which the sperm passes


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  • Microreader

    [mahy-kroh-ree-der] /ˈmaɪ kroʊˌri dər/ noun 1. a device for projecting an enlarged image of a microfilm or microphotograph, especially on a ground-glass screen. /ˈmaɪkrəʊˌriːdə/ noun 1. an apparatus that produces an enlarged image of a microphotograph

  • Micropyrometer

    [mahy-kroh-pahy-rom-i-ter] /ˌmaɪ kroʊ paɪˈrɒm ɪ tər/ noun 1. an optical used to measure the temperature of small glowing bodies. /ˌmaɪkrəʊpaɪˈrɒmɪtə/ noun 1. a pyrometer for measuring the temperature of very small objects

  • Micromachine

    noun a very small mechanical device; tiny motors fabricated along with integrated circuit “brains” on individual silicon chips

  • Micrology

    [mahy-krol-uh-jee] /maɪˈkrɒl ə dʒi/ noun 1. excessive attention to petty details or distinctions. n. “hair splitting, exaggerated attention to petty things,” 1650s, from Greek mikrologia “pettiness, care for trifles,” from micros (see micro-) + -logia (see -logy).

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