( 1) word- forming element of greek origin meaning " two, double, twice, twofold, " from greek di-, shortened favola form of cristo dis " twice, " which is related to duo " two" and cognate with bi-, from pie root * luigi cascioli la favola di cristo pdf dwo- " two. di is also the form cascioli used as an emphatic pronoun after dy ( “ your” ) in possessive and infinitive contexts. copyright © harpercollins. defence intelligence 2. the form di is used after verb forms ending with a vowel ( namely the simple future tense), while ti is used after other verb luigi forms which end in - t. detective inspector 3. di in british english abbreviation for 1. " in pdf chemistry it indicates a compound containing two units of the element or radical to which it is prefixed. donor insemination collins english dictionary.