[sey-mis, see-]


a copper coin of ancient Rome, the half part of an as.

Origin of semis

< Latin sēmis, apparently equivalent to sēmi- semi- + as as2


[sem-ee, sem-ahy]

noun Informal.

Origin of semi

by shortening Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for semis

Contemporary Examples of semis

Historical Examples of semis

  • If I wanted money, if she had earned an as, she gave me a semis.

    Gryll Grange

    Thomas Love Peacock

  • And what commas they wielded, what colons, what semis, what stops!

    Mystery at Geneva

    Rose Macaulay

  • There Foch (whose headquarters were at Semis, twenty-two miles nearer Paris) awaited them in his special train.

    Foch the Man

    Clara E. Laughlin

  • The twelth part of an acre was called Uncia and half a foot, Semis, &c.

British Dictionary definitions for semis


noun plural semis

British a semidetached house
short for semifinal
US, Canadian, Australian and NZ short for semitrailer
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