Taxis


Also found in: Dictionary, Thesaurus, Medical, Legal, Idioms, Wikipedia.

taxis

(tăk`sĭs), movement of animals either toward or away from a stimulus, such as light (phototaxis), heat (thermotaxis), chemicals (chemotaxis), gravity (geotaxis), and touch (thigmotaxis). The turning movements of plants in response to stimuli are called tropismstropism
, involuntary response of an organism, or part of an organism, involving orientation toward (positive tropism) or away from (negative tropism) one or more external stimuli.
..... Click the link for more information.
.

Taxis

A mechanism of orientation by means of which an animal moves in a direction related to a source of stimulation. There exists a widely accepted terminology in which the nature of the stimulus is indicated by a prefix such as phototaxis (light), chemotaxis (chemical compounds), geotaxis (gravity), thigmotaxis (contact), rheotaxis (water current), and anemotaxis (air current). The directions toward or away from the stimulus are expressed as positive or negative, respectively. Finally, the sensory and locomotory mechanisms by means of which the orientation is achieved are denoted by a second type of prefix forming a compound noun with taxis. Positive phototropotaxis thus describes a mechanism by means of which an animal carries out a directed movement toward a source of light along a path which permits the animal's paired eyes to receive equal intensities of light throughout the movement.

Taxis

 

a locomotory reaction of motile microorganisms and very simple plants, individual cells of multicellular organisms (zoospores, spermatozoids, leucocytes), and organelles (nuclei, plastids). Taxes may occur in response to unilateral stimulation by light (phototaxis), temperature (thermotaxis), moisture (hydrotaxis), liquid current (rheotaxis), electric current (galvanotaxis), injury (traumatotaxis), chemical stimulus (Chemotaxis), or pressure (barotaxis).

Taxes are distinguished according to the direction of the reaction: positive taxis is movement in the direction of the stimulus, negative taxis is movement away from the stimulus, and phobo-taxis is a movement of “fright,” in which the orientation is not related to the source of the stimulus. The nature of a taxis may change depending on the intensity of the stimulus and the condition of the organism. Taxes should be distinguished from tropisms, which are reactions to unilateral stimulation of individual organs of plants or whole plants attached to a substrate.

V. I. KEFELI

taxis

[′tak·səs]
(physiology)
A mechanism of orientation by means of which an animal moves in a direction related to a source of stimulation.

Taxis

["A Language Facility for Designing Database-Intensive Applications", J. Mylopoulos et al, ACM Trans Database Sys 5(2):185-207 (June 1980)].
References in periodicals archive ?
Kenny Dodds, sales manager of Autocab, said: "We are very excited to be working with Boro Taxis, one of the country's largest and most respected taxi companies in relation to this project and look forward to working with them as we expand this project further in the near future.
The Transportation and Telecommunications Ministry will be auctioning permits as part of efforts to offer "safe, reliable and high-quality taxi services" to people in Bahrain.
Maybe we could suggest that there be an automatic review of taxi fares for every two years, whether there's a petition filed or not,' Suntay told the Senate committee on public services in a hearing on Thursday.
This includes the cost of hiring a taxi, tariff rate, travel distance, waiting time in traffic jams, and at the curbside for you.
There are four types of apps for online taxis services.
The fare for taxis that are hailed on the street starts at Dh5 during daytime and the fare starts at Dh5.
Cars with registration num- ber DL1RT, can be used as economy taxis with their fare fixed at ` 12.
The number of taxis in operation last year amounted to 8,997 vehicles, which has soared this year to 9,497 vehicles.
A request for a response from Capital Taxis has been made.
Taxi aggregators can put as many taxis on the road as they want if there is demand, but there is a restriction on us or the likes of Meru.
As we make significant improvements in the way taxis are booked and requested by consumers, we see a clear growth and therefore have expansion plans for not only Wirral Satellite Cars, but our sister company Davy Liver Taxis in Liverpool.
A1 Taxis is an industry leader when it comes to using advanced technology for their cab operations; being one of the first taxi services to include a modern taxi dispatch software which offers web platform for its customers to book a taxi.