Abbreviation of Indiana, a state of the United States of America.

(biochemistry) Abbreviation of integrase. / internegative; a type of film stock, most commonly used regarding 35mm motion picture negative

A position of power or influence, or a way to get it. / (chiefly in the plural) One who, or that which, is in; especially, one who is in office.

(idiomatic, slang) The time of occurrence of an event that will never happen.

The sister of one's spouse. / The wife of one's sibling. / The wife of the sibling of one's spouse. / The sister of the spouse of one's sibling.

At or towards the interior of a defined space, such as a building or room. / Towards the speaker or other reference point. / So as to be enclosed or surrounded by something.

(obsolete, transitive) To enclose. / (obsolete, transitive) To take in; to harvest.

(often in the plural) A relative by marriage (or through affinity). / Sometimes specifically a parent-in-law of one's child, for which the dedicated terms co-mother-in-law, co-father-in-law are rare.

The wife of one's child.

One's spouse's father. / (dated) A stepfather.