phase change

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a change from one state (solid or liquid or gas) to another without a change in chemical composition
• Syn:
phase transition, state change, physical change
• Hypernyms:
natural process, natural action, action, activity
• Hyponyms:
freeze, freezing, liquefaction, thaw, melt,
melt, melting, vaporization, vaporisation, vapor,
vapour, evaporation