- 1（不好之事的）開始；發作（病痛尤其常用）
The onset of something is the moment it begins — and English almost always keeps this word for things we do not welcome. The onset of winter, the onset of war, the onset of a fever. Doctors especially like it: sudden onset means it started quickly; slow onset means it crept in. It is a fairly formal, textbook-and-news word. In daily talk a student would more often say when it started. There is an old verb to onset, meaning to attack or to press down on someone, but almost nobody uses that now; if you meet it, it is in old writing. The noun is the one you need. You can say at the onset, which means at the very beginning, still usually of something serious.
組成From on- + set. Compare Old English onsettan, “to impose; oppress, bear down” — the idea of something being set upon you.
原始詞典資料9 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，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。
Onsetname
- 1
A census-designated place in the town of Wareham, Plymouth County, Massachusetts, United States.
onsetnoun/ˈɒnˌsɛt/
- 1
medicinesciencesThe initial phase of a disease or condition, in which symptoms first become apparent.
- the onset of schizophrenia
- In mild cases of hypergonadism prior to puberty, the onset of physical and mood changes may not be abnormally early or significant enough to cause any psychological or long-term physical complications.
- 2
human-scienceslinguisticsphonologyThe initial portion of a syllable, preceding the syllable nucleus.
- The only regular sources for Sardinian *θ are Lat. ci̯ and ti̯, which are absent from Latin onsets. This means that the substantial number of words starting in *θ, discussed in § 3 – 7, cannot regularly continue a Latin form.
- 3
The beginning of a musical note or other sound, in which the amplitude rises from zero to an initial peak.
- 4
A setting about; a beginning.
- the onset of puberty
- There is surely no greater wisdom than well to time the beginnings and onsets of things.
- 5
obsoleteAnything added, such as an ornament or as a useful appendage.
- And will with deeds requite thy gentleness: And, for an onset, Titus, to advance Thy name and honourable family, Lavinia will I make my empress.
- 6
archaicAn attack; an assault especially of an army.
- Heralds, from off our towers, we might behold From first to last, the onset and retire Of both your armies
- Who on that day the word of onset gave.
onsetverb/ˈɒnˌsɛt/
- 1
obsoleteTo assault; to set upon.
- 2
obsoleteTo set about; to begin.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。