Hold this picture: you stand and look out as far as your eyes can go, and there is a line where land or sea seems to touch the sky. Nothing stops you there — it is simply where your seeing runs out.
From the word’s history
The Greek root hóros means "boundary," and horízōn meant "the bounding (circle)" — literally the line that marks off how far you can see. The modern core keeps that exactly: a limit made of sight, not of matter.
希臘文 ὅρος (hóros) 是「界線」，horízōn 就是「畫界線的那個（圈）」——正好指視野盡頭那一圈。現代的核心完全承接了它：這是一條用「看得到多遠」畫出來的界線，不是用磚牆砌出來的。也因為界線的意思在根裡，後來延伸到「知識的邊界」「時間的邊界」都非常自然。
Wiktionary, entry "horizon" (Ancient Greek ὁρίζων < ὅρος "boundary")
登入就可以看每一支怎麼連回核心畫面。
原始詞典資料7 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。
horizonnoun/həˈɹaɪ.zən/
- 1
The visible horizontal line (in all directions) where the sky appears to meet the earth in the distance.
- A tall building was visible on the whole sweep of the horizon.
- The sky and sea seem to merge at the horizon.
- 2
The range or limit of one's knowledge, experience or interest; a boundary or threshold.
- Some students take a gap year after finishing high school to broaden their horizons.
- With clinical researchers hard at work, a new treatment is on the horizon.
- 3
The range or limit of any dimension in which one exists.
- Only mortality, this irreducible and primordial horizon, that very horizon which, in Being and Time, Heidegger so compellingly revealed as the unsurpassable and defining possibility, remains.
- 4
geographygeologynatural-sciencesA specific layer of soil, or stratum
- 5
archaeologyhistoryhuman-sciencesA cultural sub-period or level within a more encompassing time period.
- 6
Any level line or surface.
- 7
board-gameschesscomputerThe point at which a computer chess algorithm stops searching for further moves.
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。