arithmetic progression - A sequence in which each term is obtained by the addition of a constant number to the preceding term, as 1, 4, 7, 10, 13. More...

initialism, alphabetism, acronym - Initialisms (sometimes called alphabetisms) are formed from the initial letters of a string of words and are pronounced as a sequence of letters, e.g. BYOB, USA, DVD. Acronyms are formed from the initial letters or parts of words in a sequence, but have the distinction of being pronounceable words, e.g. RADAR, SCUBA. More...

solfeggio, gamut - Solfeggio and gamut are words formed on the sequence of musical notes. More...

tier - From French tire, "order, sequence." More...