Definition of by-form in English:

by-form

noun

  • A secondary form of a word.

    ‘historically, “inquire” is a by-form of “enquire.”’
    • ‘She adds that ‘Hanani ‘is a by-form of ‘Hananiah ‘in other Biblical and extra-biblical texts.’’
    • ‘Under this hypothesis tammōr is simply a by-form of tadmōr.’
    • ‘Harrow is a by-form of harry, a military term meaning to ‘make predatory raids or incursions’.’

Pronunciation:

by-form

/ˈbīˌfôrm/