noun, plural tax·es [tak-seez] /ˈtæk siz/.

arrangement or order, as in one of the physical sciences.
Biology. oriented movement of a motile organism in response to an external stimulus, as toward or away from light.
Surgery. the replacing of a displaced part, or the reducing of a hernia or the like, by manipulation without cutting.
Architecture. the adaptation to the purposes of a building of its various parts.

Origin of taxis

1720–30; < New Latin < Greek táxis, equivalent to tak- (base of tássein to arrange, put in order) + -sis -sis




a plural of taxi.



noun, plural tax·is or tax·ies.

verb (used without object), tax·ied, tax·i·ing or tax·y·ing.

to ride or travel in a taxicab.
(of an airplane) to move over the surface of the ground or water under its own power.

verb (used with object), tax·ied, tax·i·ing or tax·y·ing.

to cause (an airplane) to taxi.

Origin of taxi

1905–10, Americanism; short for taxicab
Related formsun·tax·ied, adjective


a combining form representing taxis1 in compound words: heterotaxis.
Compare tax-, taxi-, taxo-, -taxy. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for taxis

Contemporary Examples of taxis

Historical Examples of taxis

British Dictionary definitions for taxis



the movement of a cell or organism in a particular direction in response to an external stimulus
surgery the repositioning of a displaced organ or part by manual manipulation only

Word Origin for taxis

C18: via New Latin from Greek: arrangement, from tassein to place in order


noun plural taxis or taxies

Also called: cab, taxicab a car, usually fitted with a taximeter, that may be hired, along with its driver, to carry passengers to any specified destination

verb taxies, taxiing, taxying or taxied

to cause (an aircraft) to move along the ground under its own power, esp before takeoff and after landing, or (of an aircraft) to move along the ground in this way
(intr) to travel in a taxi

Word Origin for taxi

C20: shortened from taximeter cab



n combining form

indicating movement towards or away from a specified stimulusthermotaxis
order or arrangementphyllotaxis
Derived Forms-tactic or -taxic, adj combining form

Word Origin for -taxis

from New Latin, from Greek taxis order
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 taxis



1911, from earlier slang use of taxi (n.) for "aircraft." Related: Taxied; taxiing.



1907, shortening of taximeter cab (introduced in London in March 1907), from taximeter "automatic meter to record the distance and fare" (1898), from French taximètre, from German Taxameter (1890), coined from Medieval Latin taxa "tax, charge." An earlier English form was taxameter (1894), used in horse-drawn cabs. Taxi dancer "woman whose services may be hired at a dance hall" is recorded from 1930. Taxi squad in U.S. football is 1966, from a former Cleveland Browns owner who gave his reserves jobs with his taxicab company to keep them paid and available ["Dictionary of American Slang"], but other explanations (short-term hire or shuttling back and forth from the main team) seem possible.

Online Etymology Dictionary, © 2010 Douglas Harper

taxis in Medicine



n. pl. tax•es (tăksēz)

The responsive movement of a free-moving organism or cell toward or away from an external stimulus, such as light.
The moving of a body part by manipulation into normal position, as after a dislocation.



Order; arrangement:stereotaxis.
Responsive movement; taxis:chemotaxis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.