- 1
A pulsation is one beat in a regular, repeating movement that you can measure — the squeeze of the heart, the throb in a vein, or the rise and fall of a machine or a sound. Doctors feel for pulsations; engineers talk about the pulsation of a pump. It is a somewhat formal, technical word. In ordinary talk people more often say beat, pulse, or throb. Pulse and pulsation sit very close: pulse is often the name of the beating itself, especially at the wrist, while pulsation leans toward each wave, or the action of pulsing. You can have pulsations of light or music too, not only of blood.
搏動、脈動
組成From pulsate + -ion. English inherited it from Middle English pulsacioun, from Middle French pulsacion, from Latin pulsātiō, “a beating or striking”; later also the medical sense of a regular expanding and contracting.
原始詞典資料5 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
pulsationnoun/pʌlˈseɪʃn̩/
- 1
The regular throbbing of the heart, an artery etc. in a living body; the pulse.
- Pulsation had ceased. For three days the body was preserved unburied, during which it had acquired a stony rigidity.
- 2
Any rhythmic beating, throbbing etc.
- Lo! as a dove when up she springs To bear thro’ Heaven a tale of woe, Some dolorous message knit below The wild pulsation of her wings; Like her I go; I cannot stay; I leave this mortal ark behind […]
- 3
biologybotanynatural-sciencesThe rhythmic increase and decrease of size in naked zoospores and plasmodia.
- 4
archaicPhysical striking; a blow.
- By the Cornelian law, pulsation as well as verberation is prohibited.
- 5
A single beat, throb or vibration.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。