C90

C90 or C-90 may refer to:

Science and technology

Multiple myeloma and malignant plasma cell neoplasms (ICD-10 code)
Caldwell 90 (NGC 2867), a planetary nebula in the constellation Carina
C₉₀, the conventional electrical unit for the coulomb
C90 audio cassette, a blank audio cassette in the very popular 90 (2 x 45) minute length

Computing

Cray C90, a supercomputer
C90 (C version), a standardized ISO C form of the C programming language, virtually the same as the ANSI C ("C89") standard

Transportation

Beechcraft C90 King Air, an aircraft
Continental C90, an aircraft engine
Honda Super Cub, an underbone motorcycle designated C90 in a 90 cc version
Chicago terminal radar approach control, (FAA designation C90); See Air traffic control

Other uses

C90-CR (M3), a rocket launcher
Ruy Lopez chess openings (ECO code)

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