What is the meaning of O-?

A blood type that has no antigens. It lacks the A, B and Rh factors on the blood cells. It is the universal donor for blood and can give blood to any blood type, but can only receive O- blood.

ortho-

Combining form of ogi (bread)

Separable verb prefix that indicates a direction, goal, destination and a contact made therein.

noun prefix

Forms nouns from some verbs.

noun prefix

her

Second-person singular relative concord.

Class 1 relative concord.

Class 3 relative concord.

A prefix denoting the third person

appears in front of some verbs meaning: to make something behave in a certain way, en-, be-, make

around

prefix indicating a perfective verb

noun prefix

noun prefix

Forms perfective verbs with the following meanings:

  1. (no change in meaning)

    (no change in meaning)

    around, past, avoiding

    to stay, to remain

    Second-person singular relative concord.

    Class 1 relative concord.

    Class 3 relative concord.

    First person singular subject + third person duoplural object.

    Second person singular subject + third person singular object.

    third-person singular clitic, he

    you; 2nd person singular subject concord

    allomorph of öt- (detransitivizing prefix)

    allomorph of ö- (second-person prefix) used for stems that begin with a consonant and have a first vowel o or u

    With following vowel lengthened if in an unreduced open syllable.

    around, all around

    a complete action, a perfective verb

    something else

    Rōmaji transcription of

    prefix indicating a perfective verb

    affects verb meaning in various ways

    appears in front of some verbs meaning: to make something behave in a certain way, en-, be-, make

    around

    down

    Added to adjectives to yield their opposites; un-

    Added to nouns to mean lack or being without

    denotes future tense in verbs and adverbs

    Soft mutation of go-.

    Second-person singular relative concord.

    Class 1 relative concord.

    Class 3 relative concord.

    Second-person singular relative concord.

    Class 1 relative concord.

    Class 2a noun prefix.

    Class 3 relative concord.

    Source: wiktionary.org