[ siksth ]
/ sɪksθ /


next after the fifth; being the ordinal number for six.
being one of six equal parts.


a sixth part, especially of one (1/6).
the sixth member of a series.
  1. a tone on the sixth degree from a given tone (counted as a first).
  2. the interval between such tones.
  3. the harmonic combination of such tones.


in the sixth place; sixthly.

Origin of sixth

before 900; six + -th2; replacing sixt, Middle English sixte, Old English sixta
Related formssixth·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sixth

British Dictionary definitions for sixth

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for sixth



1520s, replacing Middle English sixte (c.1200), from Old English syxte, from siex (see six). Cf. Old Frisian sexta, Middle Dutch seste, Old High German sehsto, German sechste, Gothic saihsta. With ending conformed to -th (1). Related: Sixthly. The noun meaning "a sixth part" is from 1550s. As a music tone, from 1590s. Sixth sense "supernatural perception of objects" is attested from 1712; earlier it meant "titillation, the sense that apprehends sexual pleasure" (1690s, from Scaliger).

Then said Peter, That is false; for there is a sixth Sense, that of Prescience : for the other five Senses are capable only of Knowledg ; but the Sixth of Foreknowledg ; which Sense the Prophets had. [William Whitson, "Primitive Christianity Reviv'd," vol. V, London, 1712]
Online Etymology Dictionary, © 2010 Douglas Harper