How many letters does the top answer for “having a single leaf” have?

The most common answer is unifoliate (10 letters).

Crossword clue: having a single leaf

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

unifoliate 10 letters wn-def

having a single leaf

having a single loculament. 50% similar → monothecal

having a single mode 50% similar → unimodal

having a single pole 50% similar → unipolar