Definition of pairwise in US English:

pairwise

adjective

  • Involving or forming a pair or pairs.

    ‘all possible pairwise combinations of the four operations’

adverb

  • In pairs.

    ‘cells were incubated singly or pairwise’

Pronunciation

pairwise

/ˈperˌwīz//ˈpɛrˌwaɪz/