1560s, "to take or have a part, portion, or share in common with others," back-formation from Middle English part-taking "a sharing" (late 14c.), or part-taker "a sharer" (c. 1400), both translations of Latin particeps "participant" (n.), also "sharing, partaking" (see participation). Meaning "to share in some degree the nature, character, or peculiarities of" is from 1610s. Related: Partook; partaking.