• synonyms


[ kroo-sis ]
/ ˈkru sɪs /

noun Astronomy.

genitive of Crux.

Origin of Crucis

From Latin

Definition for crucis (2 of 2)


[ kruhks ]
/ krʌks /

noun, genitive Cru·cis [kroo-sis] /ˈkru sɪs/. Astronomy.

Origin of Crux

< Latin: a cross Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for crucis

  • The brightest of these, α Crucis, is of the first magnitude.

    Astronomy of To-day|Cecil G. Dolmage
  • Bacon would have well understood this; it is he who invented the phrase Experimentum crucis.

  • The town of Crucis is a place very similar to Gorgona, but not so large.

  • Cernitur in ea qudarn Dominic crucis portio, (sicut spe multorum miraculorum argumento probatum est).

British Dictionary definitions for crucis (1 of 2)


/ (krʌks) /

noun Latin genitive Crucis (ˈkruːsɪs)

the more formal name for the Southern Cross

British Dictionary definitions for crucis (2 of 2)


/ (krʌks) /

noun plural cruxes or cruces (ˈkruːsiːz)

a vital or decisive stage, point, etc (often in the phrase the crux of the matter)
a baffling problem or difficulty
mountaineering the most difficult and often decisive part of a climb or pitch
a rare word for cross

Word Origin for crux

C18: from Latin: cross
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 crucis



1814, "cross," from Latin crux "cross" (see cross (n.)). Figurative use for "a central difficulty," is older, from 1718; perhaps from Latin crux interpretum "a point in a text that is impossible to interpret," in which the literal sense is something like "crossroads of interpreters." Extended sense of "central point" is from 1888.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for crucis


[ krŭks, kruks ]

n. pl. crux•es

A cross or a crosslike structure.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.