Alphabet filter:

Want to find out what does the word ob mean? We gathered all the possible definitions of the word ob on our website. Our definition dictionary is updated all the time with new definitions and is ready to help you.


Part of speech:

A prefix meaning " in the way of"; " against," as in obviate; ob becomes oc before c, as in occasion: of before f, as in offend; o before m, as in omit; and op before p, as in oppose; in bot., ob means " reversed"- thus: " cordate" means heart- shaped, with the attachment at the broad end; " obcordate" means heart- shaped, but with the attachment at the narrow end.

Usage examples "ob":