How many letters does the top answer for “forming or producing seed, or the male generative product of animals or of plants.” have?

The most common answer is seminific (9 letters).

Crossword clue: forming or producing seed, or the male generative product of animals or of plants.

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

seminific 9 letters web-def

Forming or producing seed, or the male generative product of animals or of plants.

seminifical 11 letters web-def

Forming or producing seed, or the male generative product of animals or of plants.