oo-

• oö-

From Ancient Greek ᾠο- (ōio-), combining form of ᾠόν (ōión, “egg”). Compare ovi-.

• (UK) IPA^(key): /əʊ.ə-/, (primary stress on prefix) /əʊˈɒ-/

• Audio (Southern England):

  (file)

• Audio (Southern England):

  (file)

• (US) IPA^(key): /oʊ.ə-/, (primary stress on prefix) /oʊˈɑ-/

oo-

1. Relating to eggs or ova.

Internationalism (see English oo-), ultimately from Ancient Greek ᾠόν (ōión).

• IPA^(key): /ˈoː-/, [ˈo̞ː-]

oo-

1. (in loanwords) oo-

oo-

1. oo-

• IPA^(key): /òː-/

oo-

1. Marks a third-person subject of a progressive verb

• The ordinary means of marking a third-person subject of progressive verb is with the prefix yi-, but if the verb contains a disjunct prefix composed of a consonant plus the vowel /i/, oo- is used instead.

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

oo-

1. Class 2a noun prefix.