tick
1 Commerce the smallest increment of a price fluctuation in a commodity exchange. Tick size is usually 0.01% of the nominal value of the trading unit
tick
21. any of various small parasitic arachnids of the families Ixodidae (hard ticks) and Argasidae, (soft ticks), typically living on the skin of warm-blooded animals and feeding on the blood and tissues of their hosts: order Acarina (mites and ticks)
2. any of certain other arachnids of the order Acarina
3. any of certain insects of the dipterous family Hippoboscidae that are ectoparasitic on horses, cattle, sheep, etc., esp the sheep ked
tick
11. the strong covering of a pillow, mattress, etc.
tick
2 Brit informal account or credit (esp in the phrase on tick)
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
tick
[tik] (communications)
A pulse broadcast at 1-second intervals by standard frequency and time broadcasting stations to indicate the exact time.
(computer science)
A time interval equal to ¹⁄₆₀ second, used primarily in discussing computer operations.
(invertebrate zoology)
Any arachnid comprising Ixodoidea; a bloodsucking parasite and important vector of various infectious diseases of humans and lower animals.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.