:10
:09
:08
:07
:06
:05
:04
:03
:02
:01
| ability to perceive stimuli |
| pertaining to an involuntary response to a stimulus, in which the nerve impulse from a receptor is transmitted inward to a nerve center, then transmitted outward to an effector |
contraction con·trac·tion (kən-trāk'shən)
n.
The act of contracting or the state of being contracted.
The shortening and thickening of functioning muscle or muscle fiber.
| contraction (kən-trāk'shən) Pronunciation Key
The shortening and thickening of a muscle for the purpose of exerting force on or causing movement of a body part. See more at muscle. |
A word produced by running two or more words together and leaving out some of the letters or sounds. For example, isn't is a contraction of is not.
Note: An apostrophe is generally used in contractions to show where letters or sounds have been left out.