Definition of evolutionarily in US English:

evolutionarily

adverb

  • In a way that relates to evolution or gradual development.

    ‘plant species evolutionarily adapted for growth in warm climates’
    sentence adverb ‘evolutionarily speaking, a gene is the particle of inheritance’

Pronunciation

evolutionarily

/ˌevəˌlo͞oSHəˈnerəlē//ˌɛvəˌluʃəˈnɛrəli/