(transitive) To make or render rich or richer. / (intransitive) To become rich or richer; become superior in quality, condition or effectiveness.

plural of richesse

(mnemonic) A mnemonic phrase to help remember the order of the seven colours of the rainbow: red, orange, yellow, green, blue, indigo, violet.

comparative form of neutron-rich: more neutron-rich

superlative form of neutron-rich: most neutron-rich

(rhyming slang, humorous, archaic) A dictionary.

(rare) Wealth; riches; richness; prosperity.

(mineralogy) A monoclinic-prismatic mineral containing antimony, arsenic, calcium, chlorine, copper, hydrogen, and oxygen.

(mineralogy) A triclinic black mineral containing hydrogen, lead, oxygen, and uranium.

(mineralogy) A tetragonal-pyramidal mineral containing calcium, hydrogen, iron, oxygen, and phosphorus.