出典:Wiktionary
出典:『Wiktionary』 (2026/03/04 21:47 UTC 版)
From three + -ness. Compare 中期英語 þrinnesse, þrimnesse, þremnesse, þrumnesse (“trinity”, literally “three-ness”), 古期英語 þrīnes, þrīnness (“trinity”, literally “three-ness”).
threeness (countable and uncountable, plural threenesses)