-i-

From Latin -i-.

-i-

1. (in coining neologisms) A vowel inserted interconsonantally between morphemes of Latinate origin in order to ease pronunciation (an anaptyxis, a linking vowel).

• -k-
• -o- (the Greek parallel)

• The Concise Oxford English Dictionary [Eleventh Edition] lists -i- as an entry.

The initial vowel of primate.

-i-

1. (pharmacology) a monoclonal antibody derived from a non-human primate source

• -mab is the base suffix common to all monoclonal antibodies. (See that entry for full paradigm.)

• USP Dictionary of USAN and International Drug Names, U.S. Pharmacopeia, 2000

From -y.

-i-

1. Alternative form of -y (“having the quality of”)

Spelling change, used when followed by another suffix such as -ness, as in mess → messy → messiness, or -ly as in messily.

-i-

1. Connecting two parts of some compound words

   konipas (kůň +‎ -i- +‎ pást)

-i-

1. Indicator of plural in nominal forms, except in nominative case, in which it is -t.

   talossa - taloissa ― in the house - in the houses

• if the plural indicator is between two vowels it becomes -j-

  talon - talojen ― of the house - of the houses

From the reduction of several historical unstressed short stem vowels during the Old Latin period. The reduced vowel was later reinterpreted as part of various suffixes.

-i-

1. Connecting vowel inserted between a stem and a suffix in compound words.