How many letters does the top answer for “the process whereby heat changes something from a solid to a liquid” have?

The most common answer is melt (4 letters).

Crossword clue: the process whereby heat changes something from a solid to a liquid

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

melt 4 letters wn-def

reduce or cause to be reduced from a solid to a liquid state, usually by heating

melting 7 letters wn-def

the process whereby heat changes something from a solid to a liquid

thawing 7 letters wn-def

the process whereby heat changes something from a solid to a liquid