1.NounA word with the same meaning as another formed by removing one or more of the syllables of the longer word, and considered a word in its own right rather than an abbreviation.
""Tux" is a short form of "tuxedo".; "Rob" is a short form of "Robert"."
2.NounParticularly in Slavic languages, a shortened form of the adjective, used predicatively.
"нов, нова, ново, новы (nov, nova, novo, novy) are short forms of новый (novyj)."