How many letters does the top answer for “another word for hematin” have?

The most common answer is haem (4 letters).

Crossword clue: another word for hematin

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

haem 4 letters gen-syn

a complex red organic pigment containing iron and other atoms to which oxygen binds

heme 4 letters gen-syn

a complex red organic pigment containing iron and other atoms to which oxygen binds

another word for about 50% similar → approximately, roughly, some

another word for terms 50% similar → footing

another word for under 50% similar → nether

another word for word 50% similar → phrase