noun
first-degree burn
Medical term; in everyday conversation, 一度のやけど is more common.
第一度熱傷は表皮のみの損傷で、通常は数日で治ります。
A first-degree burn involves damage only to the epidermis and usually heals in a few days.
Compound of 第一度 (first degree) + 熱傷 (burn). The term follows the international classification of burns.