1 the act of proceeding in a regular formation
2 a group of people or things moving forwards in an orderly, regular, or ceremonial manner
3 a hymn, litany, etc., sung in a procession
4 (Christianity) the emanation of the Holy Spirit
5 intr Rare to go in procession (C12: via Old French from Latin processio a marching forwards)
n a moth of the family Thaumetopoeidae, esp. the oak processionary moth (Thaumetopoea processionea), the larvae of which leave the communal shelter nightly for food in a V-shaped procession
English Collins Dictionary - English Definition & Thesaurus
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