Japanese
Noun
葉芽 (hiragana ようが, romaji yōga, historical hiragana えふが)
-  leaf bud
References
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1 2  2006, 大辞林 (Daijirin), Third Edition (in Japanese), Tōkyō: Sanseidō, ISBN 4-385-13905-9
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1 2  1998, NHK日本語発音アクセント辞典 (NHK Japanese Pronunciation Accent Dictionary) (in Japanese), Tōkyō: NHK, ISBN 978-4-14-011112-3