What is the meaning of Di-?

Two.

Double, twice the quantity.

A pair.

Both, possessing two distinct (possibly opposing) qualities.

Alternative form of dis-: split, to split; shortened before l, m, n, r, s (followed by a consonant), and v; also often shortened before g, and sometimes before j.

Alternative form of dia-: across or through, before a vowel.

di-

two

meaning two, twice, or double

di-

di- (double, twin)

di-

di-

Used to form passive voice or "patient focus" (in some analysis) on a verb, usually used in an OVA sentence.

de-

di-

Romanization of ꦢꦶ-

class 5 prefix

class 5 subject prefix

Alternative form of dis-

Two, double; di-.

Patient focus or passive voice marker of a verb.

fire, near or into it

fire, light

arms and legs

extension, elongated shape

noise, sound, oral, food, sensory

color (see also dini-)

relinquishment, relief

sanctity

Unclassified, often entering in the formation of other prefix compounds

Forms a number of inceptive verbs, with a (∅/si) paradigm.

Forms a number of inchoative verbs, with prepounded dah and a transitional (yii/yii) paradigm.

Forms the future mode of all active verbs along with the progressive yi-.

Forms a number of neuter adjectivals.

Personal prefix used in combination with the prefix of position I à-, marking the reflexive verbs. It always triggers a classifier shift (d, łl).

Class 8 noun prefix.

di-

di- (two, twice or double)

Class 8 noun prefix.

third-person plural possessive prefix, their

third-person singular possessive prefix, his, her

alternative form of da- (its) when preceded by a root-initial i

di-

dis-

non-; un-; de-

Class 8 noun prefix.

intensifying prefix

without, -less, de-, a-, negative prefix

Source: wiktionary.org