Where does “adamantean” come from?

adamantean (English) comes from English adamant, from Middle English adamant, from Latin adamantem, from Ancient Greek ἀδάμας, from Ancient Greek ἀ-, from Proto-Hellenic hə-, from Proto-Indo-European sm̥-, from Proto-Indo-European sem- — together, one.

adamantean (English): Of adamant; hard as adamant

Definitions

  1. Of adamant; hard as adamant

Ancestry of “adamantean”, step by step

StepLanguageWordMeaning
1EnglishadamantFirm; unshakeable; unyielding; determined; Very...
2Middle Englishadamantadamant, adamantine; An invulnerable or...
3Latinadamantemaccusative singular of adamās
4Ancient Greekἀδάμαςadamant, the hardest metal; a hard metal...
5Ancient Greekἀ-The alpha privativum, used to make words that...
6Proto-Hellenichə-same; together
7Proto-Indo-Europeansm̥-one; with, together
8Proto-Indo-Europeansem-together, one
Every word from Proto-Indo-European sem-Every word from Ancient Greek ἀ-Every word from Ancient Greek ἀδάμας