hexaferrum
A hexagonal-dihexagonal dipyramidal yellowish steel gray mineral containing iridium,…A hexagonal-dihexagonal dipyramidal yellowish steel gray mineral containing iridium, iron, osmium, and ruthenium.
Meaning
2 senses(uncountable)A hexagonal-dihexagonal dipyramidal yellowish steel gray mineral containing iridium, iron, osmium, and ruthenium.
(uncountable)A hexagonal-close-packed allotrope of iron, stable only at high pressure.
Synonyms
1 synonymsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable