Forms nouns referring to fields of knowledge or practice. / Forms nouns referring to activities.

(countable, anatomy, medicine) Initialism of intercostal space. / (Internet, computing) Initialism of Internet connection sharing.

(motor racing) Initialism of Indy Car Series, the premier open-wheel racing series in the United States. / (medicine) Initialism of International Continence Society.

plural of IC

(obsolete) forms abstract nouns

plural of icing

With ice added. / Very cold, but not necessarily containing ice. / Covered with icing.

present participle of ice

(sports) Abbreviation of Iceland. / Initialism of Institution of Civil Engineers.

(automotive) Acronym of internal combustion engine, internal-combustion engine. / (computing) Initialism of internal compiler error. / (computing) in-circuit emulator, in-circuit emulation