ब्रह्मा ।वाचस्पतिरयोनिजः; वाचः विद्यायाः पतिः वाचस्पतिः, जनन्यां न जायत इति अयोनिजः; इति सविशेषणमेकं नाम ॥
In plain words
Brahmā. — 'Vācaspatir ayonijaḥ.' Speech here means knowledge, and he is its lord: Vācaspati. No mother's womb ever bore him: Ayonija. Qualifier and all, this stands as a single name.
Close to the Sanskrit
Brahmā. — 'Vācaspatir ayonijaḥ': the lord of speech, that is, of knowledge, is Vācaspati; he is not born in a mother, therefore Ayonija; thus it is one name together with its qualifier.