chieflyScots law to approve or ratify (a deed or contract, esp one that is defective)
2.
law to confirm (a proceeding, etc)
3.
to recognize (a particular type of car or car component) as a production model or component rather than a prototype, as in making it eligible for a motor race
[C17: from Medieval Latin homologāre to agree, from Greek homologein to approve, from homologos agreeing, from homo- + legein to speak]