Extremely Large - Kyokudai

Japanese: 極大 - キョクダイ

[noun/adjective]
1. Extremely large. Also, the state of being so. maximum "Damage" ⇔ Minimal.
2. When a function f ( x ) changes from an increasing to a decreasing state at x = a , the function f ( x ) is said to be maximum at x = a . f ( a ) at this time is called a maximum value. → Minimum
The day when the number of meteors that appear per hour is the greatest among the three meteor showers, regardless of the observation location or conditions. → Peak day
[Synonyms] ( 1 ) big, large, great, huge, gigantic, gigantic, huge, large, large-sized, large-sized, large-mouthed, large-sized, large-grained, coarse, enlarged, Bulky Bulk Big, gigantic, jumbo, giant, macro, maximum, mammoth, king size, excessive, magnificent, grand, majestic, large-scale, splendid, vast, largest, extra-large, mighty, Super-Dreadnought Just in time・Large-scale, big project, huge, huge / ( 2 ) Largest, infinite

Very large [extremely large]

[noun, adjective] Something that is extremely large. Also, the state of being so.

Source: About Shogakukan Digital Daijisen Information | Legend

Japanese:

［名・形動］
１きわめて大きいこと。また、そのさま。「極大な被害」⇔極小。
２関数f（x）がx＝aにおいて増加から減少の状態に変わるとき、関数f（x）はx＝aで極大であるという。このときのf（a）を極大値という。→極小
３ある流星群において、観測場所や観測条件によらず、流星の時間当たりの出現数がもっとも多くなること。→極大日
[類語]（1）大きい・大きな・大いなる・でかい・でっかい・どでかい・馬鹿でかい・大振り・大形・大柄・大口・大作り・大粒・粗大・肥大・嵩張かさばる・ビッグ・巨大・ジャンボ・ジャイアント・マクロ・マキシマム・マンモス・キングサイズ・過大・豪壮・雄大・壮大・大規模・壮麗・広壮・最大・特大・強大・超弩級ちょうどきゅう・大掛かり・大仕掛け・大大的・でかでか／（2）最大・無限大