different between relaxation vs catastalsis

English

Etymology

Borrowed from Latin relaxatio, relaxationis; equivalent to relax +? -ation.

Pronunciation

• (General American) IPA^(key): /??ilæk?se???n/, /???læk?se???n/

Noun

relaxation (countable and uncountable, plural relaxations)

1. The act of relaxing or the state of being relaxed; the opposite of stress or tension; the aim of recreation and leisure activities.
2. A diminution of tone, tension, or firmness; specifically in pathology: a looseness; a diminution of the natural and healthy tone of parts.

   relaxation of the soft palate

3. Remission or abatement of rigor.
4. Remission of attention or application.

   relaxation of efforts

5. Unbending; recreation; a state or occupation intended to give mental or bodily relief after effort.
6. (physics) The transition of a nucleus, atom or molecule from a higher energy level to a lower one; the opposite of excitation
7. (music) The release following musical tension.

Derived terms

• dielectric relaxation
• letter of relaxation

Related terms

• relax
• relaxable
• relaxant
• relaxate
• relaxative

Translations

References

• relaxation in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

English

Noun

catastalsis (uncountable)

1. (biology) The rhythmic contraction and relaxation of the muscle of the intestines. It resembles ordinary peristalsis but is not preceded by a zone of inhibition.