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Cyclic means happening in cycles: coming back again and again in the same order, like a wheel turning. Seasons are cyclic. Some pain, some business, some history is called cyclic too.
Cyclic means happening in cycles Cyclic循環的意思是一次又一次循環發生：coming back again and again in the same order按照同樣的順序一直回來，like a wheel turning就像輪子轉動一樣。Seasons are cyclic季節就是循環的。Some pain, some business, some history is called cyclic too有些疼痛、有些景氣、有些歷史也會被稱為循環的。
Scientists also use cyclic for things shaped like a ring — in chemistry, a cyclic molecule has atoms joined in a closed loop, not a straight line. That is a school-science sense, but a true one.
Scientists also use cyclic for things shaped like a ring科學家也用cyclic來形容環狀的東西——in chemistry, a cyclic molecule has atoms joined in a closed loop在化學裡，cyclic molecule環狀分子的原子連成一個封閉的環，not a straight line而不是一直線。That is a school-science sense, but a true one這是學校自然科學裡的用法，但確實存在。
Though actually, newspapers often write cyclical for weather, fashion, and money. Cyclic and cyclical sit very close, and many people treat them as twins; science still likes cyclic for the ring and the strict repeat.
Though actually不過其實，newspapers often write cyclical for weather, fashion, and money報紙講天氣、流行、金錢的時候常寫成cyclical週期性的。Cyclic and cyclical sit very close cyclic和cyclical意思非常接近，and many people treat them as twins很多人把它們當成一對雙胞胎；science still likes cyclic for the ring and the strict repeat但科學上講環狀或嚴格重複時，還是偏好用cyclic。
As a noun, cyclic is rare and mostly for specialists. The word you will meet is almost always the adjective.
As a noun當名詞用的時候，cyclic is rare and mostly for specialists cyclic很少見，主要是專家在用。The word you will meet is almost always the adjective你會遇到的幾乎都是形容詞用法。
組成From French cyclique, or from Latin cyclicus, from Ancient Greek kuklikós. On the surface, cycle + -ic. It is also, in a patchy way, a doublet of the rare word chakric — they match in pieces, not as whole everyday words.
原始詞典資料8 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。
Cyclicadj
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Of or relating to the Ancient Greek Epic Cycle.
- Though Haubold avoids speculating on dates and mechanisms of transmission, his genre of cosmic history in Greece depends on the formation of a Hesiodic and Cyclic canon, not long before the sixth century.
cyclicadj/ˈsaɪ.klɪk/
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Characterized by, or moving in cycles, or happening at regular intervals; cyclical
- The weather had a cyclic pattern of rain and sun.
- Our recent article on the York-Knaresborough-Harrogate branch mentioned that the diesel multiple-units covering the passenger service did so in the course of complicated cyclic diagrams.
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chemistrynatural-sciencesphysical-sciencesHaving chains of atoms arranged in a ring.
- Benzene and cyclohexane are both cyclic compounds.
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biologybotanynatural-sciencesHaving parts arranged in a whorl.
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mathematicssciencesBeing generated by only one element.
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geometrymathematicssciencesAble to be inscribed in a circle.
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engineeringfirearmsgovernmentFiring at its full cyclic rate.
- On it came, closer and closer, and as it did so it became clear that the pilot, if he was alive, had terminal intentions. Though the torpedo somehow missed, the plane itself did not. To those watching helplessly from other stations, the ship's antiaircraft gunners, in their final moments, were an inspiration: eyes focused through iron sights on the plane as it sped at them, weapons hot, going cyclic, hunched down and never flinching until the Betty struck high on the mainmast, killing them all.
cyclicnoun/ˈsaɪ.klɪk/
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aeronauticsaerospaceaviationThe flight control used to control a helicopter's direction and rate of horizontal movement by tilting the lift vector of the helicopter's main rotor disk.
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。