1. (of words) formed in imitation of a natural sound
   - echoic, imitative, onomatopoeic, onomatopoetic

See also: onomatopoeia

• octane number
• octane rating
• octanedioic acid
• octangular
• Octans
• octant
• octave
• Octavian
• octavo
• octennial
• octet
• octette
• octillion
• octo-
• October
• October 12
• October 24
• October Revolution
• Octoberfest
• octodecimo
• octogamy
• octogenarian
• octonary
• octopod
• Octopoda