No-see-um Definition

nōsēəm
noun
Webster's New World

(colloquial) A biting midge, a small flying insect that harasses people out of doors, particularly in warm weather after sunset.

Wiktionary
Leptoconops torrens, a small biting fly.
Wiktionary

Any Ceratopogonidae, or biting midge, a family of small flies (1-4 mm long) in the order Diptera.

Wiktionary
Any biting bug or insect that is normally too small to see unaided.
Wiktionary
Synonyms:

Other Word Forms of No-see-um

Noun

Singular:
no-see-um
Plural:
no-see-ums

Origin of No-see-um

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