discharging
放電中
解説 Definition
discharging は discharge（放電する、排出する）の現在分詞・動名詞です。ここでは特に、電池や機器が電気を外へ出している「放電中」の状態を表します。
Discharging describes a battery, cell, or electrical device releasing stored electrical energy while supplying current to a circuit. It is the present participle and gerund of discharge and, in this sense, contrasts with charging.
覚え方のコツ Memory Tip
原形 discharge の語末の無音 e を落として -ing を付けた形が discharging。発音は discharge の末尾 /dʒ/ に /ɪŋ/ が続く。ここでは battery is discharging「電池が放電中」が核で、充電中の charging と反対。人を退院させるなど別義に広げず電気の文脈で覚える。
Begin with discharge, meaning to release what has been stored or contained. To form discharging, drop the final silent e and add -ing; the final /dʒ/ of discharge is followed by /ɪŋ/. In this entry, picture a battery sending its stored electrical energy outward into a device. The basic pattern is “The battery is discharging,” and useful combinations include discharging slowly, discharging too quickly, and a discharging cell. Contrast it directly with charging: charging puts energy into a battery, while discharging takes usable energy out. This electrical contrast keeps the intended sense clear.
例文
The battery is discharging slowly.
その電池はゆっくり放電しています。
This device stops working while the cell is discharging.
この装置は、セルが放電している間は動作を停止します。
The engineer checked whether the backup battery was discharging too quickly.
技術者は、バックアップ電池の放電が速すぎないか確認しました。
discharging の類義語・関連語
discharging の語源・成り立ち Etymology
discharging は discharge の進行形で、古フランス語由来の語です。dis-「離して」と charge「荷を積む」が合わさり、元は「荷を下ろす」なので、そこから「放つ」「電気を外へ出す＝放電する」へ広がりました。関連語は charge, cargo。
Discharging is formed from discharge by dropping the final silent e and adding -ing. Discharge entered English through Old French and combines dis-, conveying removal or separation, with charge, originally associated with a load or burden. The literal idea of unloading developed into several kinds of release, including the release of stored electricity from a battery. Charge ultimately belongs to the same historical word family as cargo, though their modern uses differ.
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