lanthanum
1 synonym for lanthanum, grouped by meaning and by how common each one is.
Noun — A soft, silvery-white metal element, symbol La, atomic number 57, which slowly tarnishes in air.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
Etymology
From Ancient Greek λανθάνω (lanthánō, “to escape notice”) + -um (“a chemical element”), because it had gone long undetected in mineral ores.
Full origin of lanthanum →