adjectival noun or quasi-adjective

  1. huge, vast, enormous, colossal, extensive, large.

noun, takes する

  1. swelling, expansion.

Variations

Pronunciation Kanji Kana Is Common
膨大 ぼうだい
厖大 ぼうだい
尨大 ぼうだい

Contained Kanji Breakdown

swell, get fat, thick
ふく.らむ ボウ (8th, N1)
month, moon
つき ゲツ ガツ (1st, N5)
swelling, sound of drum
ホウ (Kentei 1)
drum, surname
シュ チュ たてる
ten
ジュウ ジッ ジュッ (1st, N5)
beans, pea, midget
まめ トウ ズ (3rd, N1)
delicious(旨) variant
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
mouth
くち コウ ク (1st, N4)
grass, straw, herbs
to divide
three, hair ornament, short hair or fur radical (no. 59)
サン セン (Kentei 1)
katakana no radical (no. 4)
ヘツ えい よう (Kentei 1)
large, big
ダイ おお- た (1st, N5)
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
person
ひと ニン ジン (1st, N5)