紅葉
もみじ
momiji
= the Japanese maple; autumn leaves and their turning colors
紅葉 is the fiery red of a maple leaf in autumn, and the word names both the tree itself and the whole season of leaves blazing into crimson and gold across Japan’s hills.
紅葉 has two linked senses. It is the name of the Japanese maple tree, whose small, deeply lobed leaves turn brilliant red. It also means autumn foliage in general, the changing of leaves to red and yellow, and the act of leaves coloring. The same characters can be read もみじ (especially for the maple and as a poetic word) or こうよう (for the phenomenon of autumn colors).
Note the two readings: こうよう for autumn coloring as a phenomenon (紅葉狩り, leaf-viewing) and もみじ for the maple tree or in poetic and place names. A near-synonym for the maple is カエデ (kaede), though もみじ usually suggests the more delicate, deeply cut leaves. The reading momiji is also used in names and even for a maple-shaped tempura sweet.
紅 means crimson or deep red, and 葉 means leaf, so 紅葉 literally means red leaves. Read こうよう it names the general turning of autumn foliage; read もみじ, an irregular kun-style reading, it more often means the maple tree itself. The もみじ reading derives from an old verb もみづ, meaning for leaves to turn red.
Everyday use
今週末、京都へ紅葉を見に行く予定なんだ。
Konshuumatsu, Kyouto e momiji wo mi ni iku yotei nanda.
This weekend I’m planning to go to Kyoto to see the autumn leaves.
Casual / Social Media
山全体が真っ赤に染まってて、紅葉が今まさに見頃！
Yama zentai ga makka ni somattete, momiji ga ima masa ni migoro!
The whole mountain is dyed bright red, the autumn leaves are at their absolute peak right now!
Formal / Cultural context
古来より、紅葉は和歌に詠まれる秋の代表的な風物詩であった。
Korai yori, kouyou wa waka ni yomareru aki no daihyouteki na fuubutsushi de atta.
Since ancient times, autumn leaves have been a quintessential seasonal motif sung in classical poetry.
Viewing autumn leaves is a cherished seasonal pastime called 紅葉狩り (momijigari), literally maple hunting, mirroring the spring custom of cherry-blossom viewing. People travel to famous mountains, temples, and gardens to see the foliage at its peak, and weather reports track a 紅葉前線, a coloring front, moving south as the season advances. The pursuit of fleeting natural beauty is central to the appeal.
紅葉 carries deep roots in Japanese poetry and art, where the reddening leaves have long symbolized autumn and the bittersweet passing of time. Like the cherry blossom, the maple leaf is loved partly for its impermanence, beautiful precisely because it will soon fall. The motif appears endlessly in classical verse, kimono patterns, and seasonal sweets, making 紅葉 one of the enduring emblems of the Japanese sense of the seasons.