C or c /sē/

1. The third letter in the modern English alphabet as in the Roman, in origin a rounded form of the Greek gamma (Γ, γ), generally pronounced either as a voiceless velar stop, as in cat, or a voiceless sibilant, as in city
2. The first note of the diatonic scale of C major, the sound on which the system is founded (music)
3. The key or scale having that note for its tonic (music)
4. The designation of the C series of paper sizes (used for envelopes), ranging from C0 (917×1297mm) to C7/6 (81×162mm)
5. In hexadecimal notation, 12 (decimal) or 1100 (binary)
6. The third highest in a category or range
7. A high-level computer programming language
8. Anything shaped like the letter C

C1 noun (Brit)

(a member of) the social class or group categorized as supervisory and clerical

C2 noun (Brit)

(a member of) the social class or group categorized as skilled or manual

C3 adjective

1. In a poor state of physical fitness
2. Inferior (informal) (see also A1 under A¹)
3. See also separate entry c-cubed

C clef noun (music)

A symbol, an ornamental form of the letter C, used to indicate middle C on the stave

Cˈ-horizon noun (geology)

The layer of soil above the bedrock, consisting mainly of weathered rock

Cˈ-list adjective (informal)

Belonging to an insignificant or unadmired group (of celebrities, etc)

C'-lister n.

• carpet snake
• carpet snakes
• carpet-sweeper
• carpet-sweepers
• carpet tile
• carpet tiles
• carphologies
• carphology
• car phone
• carphone
• car phones
• carphones
• carpi
• carping
• carpingly
• carpings
• carpogonia
• carpogonium
• carpological
• carpologies
• carpologist
• carpologists
• carpology
• carpometacarpi
• carpometacarpus