わかめ

Thought to derive from 若 (waka, “young, youth”) +‎ 海布 (me, “edible seaweed”).[1][2] Attested in the Man'yōshū of 759 as 和可米(わかめ) (wakame).[1][3]

• (Tokyo) わ​かめ [wáꜜkàmè] (Atamadaka – [1])[2][4][5]
• (Tokyo) わか​め [wàkáꜜmè] (Nakadaka – [2])[2][4][5]
• IPA^(key): [ɰᵝa̠ka̠me̞]

わかめ or ワカメ • (wakame) 

1. [from 759] a type of edible seaweed: Undaria pinnatifida, wakame

• As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).

From 若(わか) (waka-) + 芽(め) (me).

• (Tokyo) わか​め [wàkáꜜmè] (Nakadaka – [2])[4]
• (Tokyo) わかめ [wàkámé] (Heiban – [0])[4]
• (Tokyo) わ​かめ [wáꜜkàmè] (Atamadaka – [1])[4]
• IPA^(key): [ɰᵝa̠ka̠me̞]

わかめ • (wakame) ^{←わかめ (wakame)?}

1. young sprout