How many letters does the top answer for “the act of conveying or carrying over.” have?

The most common answer is transvection (12 letters).

Crossword clue: the act of conveying or carrying over.

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

transvection 12 letters web-def

The act of conveying or carrying over. [R.]

act of carrying back. 50% similar → recarriage

the act of carrying something 50% similar → carry

the act of conveying over. entick. 50% similar → transduction