vedyog.net

In English:

Swami Dayanand Saraswati Commentary : The one who teaches all knowledge = sciences by imbibing the best conduct, is called ‘Acharya’.

Comment in English : Aachaarya-a Vaidik scholar who trains students in good behaviors and teaches them various branches of knowledge.

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In Hindi:

महर्षि दयानन्द व्याख्या : जो श्रेष्ठ आचार को ग्रहण कराके सब विद्याओं को पढ़ा दे वे, उसको 'आचार्य' कहते हैं ।