noun
Honorific term used to refer respectfully to the name of the person you are addressing or a third party. Often used in formal letters or speeches.
お手紙にご尊名を記入ください。
Please write your esteemed name on the letter.
先生のご尊名は以前から存じ上げております。
I have long been aware of your honored name, Professor.
Compound of 尊 (そん, 'revered') and 名 (めい, 'name'). The reading そんめい is the standard on'yomi combination.