A short single contraction is called an acronym. An acronym is a word formed from the first letters of each word in a phrase. For example NASA stands for National Aeronautics and Space Administration.
Clarify what kind of contraction you are talking about. Are you talking grammar, musculoskeletal, viral? A short grammatical contraction would be to combine two words into one. Do not becomes don't. Another form of contraction may be an acronym or initialism such as GIF or FBI. GIF is an acronym because you sound out the letters as one word. FBI is an initialism because you say each letter independently.
A single contraction that lasts only a fraction of a second is called a muscle twitch. Its when the muscle seizes up for a quick pulse then relaxes.
A: A Twitch
The contraction "who're" is short for "who are".
'It won't' is already a contraction. It is the short form for 'it will not'
Cardiac volume is the blood pumped in a single contraction
A heart contraction is called premature atrial contraction.
Its a contraction that it short for can not
There is no "contraction." There is a short form or abbreviated form, which is "mime."
No, the correct form is, "You weren't interested." The contraction wasn't is short for 'was not'. The contraction weren't is short for 'were not'.
There is no contraction (no apostrophe is used). The slang short form is kinda.