full mastery of an art; the teacher's conferral of complete instruction and recognition as a master (often formalized with a certificate).
長年の修行の末、師匠から免許皆伝を授かった。
After years of training, he was granted full mastery by his master.
免許皆伝という言葉は、主に伝統芸能や武道で使われる。
The term 'menkyokaiden' is mainly used in traditional arts and martial arts.
彼は剣術の免許皆伝を受け、道場を継いだ。
He received full mastery in swordsmanship and succeeded the dojo.