A formal transmission or initiation in a traditional art (e.g., martial arts, tea ceremony) by which a master grants a student full mastery and permission to teach; the certificate/recognition of that initiation.
彼は茶道で師匠から皆伝を受けた。
He received kaiden (full transmission) from his master in the tea ceremony.
昔は武道の皆伝を得るには長年の修行が必要だった。
In the past, obtaining kaiden in a martial art required many years of training.
皆伝を取った後は自分の門人を取って教えることが許される場合が多い。
After receiving kaiden, one is often allowed to take on and teach one’s own disciples.