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NA-adjective/adjectival noun (keiyodoshi)
huge, vast, enormous, colossal, extensive, multitudinousénorme, étendu, gonflement, inflation, monumental

Meaning restricted to 膨大
Noun (futsuumeishi)
noun or participle which takes the aux. verb suru
swelling, expansionAnwachsen

ON: ボウKUN: ふく.らむ, ふく.れる
swell, get fat, thick

ON: ダイ, タイKUN: おお-, おお.きい, -おお.いに
large, big

ON: ボウKUN: おおき.い
large, mix

ON: ダイ, タイKUN: おお-, おお.きい, -おお.いに
large, big

ON: ボウKUN: むくいぬ
shaggy hair or dog

ON: ダイ, タイKUN: おお-, おお.きい, -おお.いに
large, big

Example sentences
インテル社はその発明で膨大な特許料を得ている。Parts: インテル, (しゃ), 其の (その), 発明 (はつめい), 膨大 (ぼうだい), 特許料 (とっきょりょう), 得る (える)Intel gets a huge royalty from the invention.

Community comments
The words and kanji on this web site come from the amazing dictionary files JMDict, EDICT and KANJIDIC. These files are the property of the Electronic Dictionary Research and Development Group, and are used in conformance with the Group's licence. The example sentences come from the projects Tatoeba and Tanaka Corpus. Kanji search by radicals is based on the Kradfile2 and Kradfile-u files containing radical decomposition of 13108 Japanese characters. Many thanks to all the people involved in those projects!