Share this entry

Share this page


Syllabification: proto-
(usually prot- before a vowel)

Definition of proto- in English:


1.1First; anterior; relating to a precursor: protomartyr protozoan


from Greek prōtos 'first'.

Definition of proto- in:

Share this entry

Share this page


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day quintillion
Pronunciation: kwɪnˈtɪljən
a thousand raised to the power of six…