IPA: /ɪnˈsɛptər/
KK: /ɪnˈsɛptər/
A person who is just starting to learn or do something, especially in a specific field or subject.
As an inceptor in the field of science, she was eager to learn and explore new ideas.
Inceptor is formed from "in-" (meaning into) and "capere" (meaning to seize or take). The word refers to someone who begins or takes on a task or project, thus an initiator or beginner.
Think of someone 'taking on' ('capere') something 'into' ('in-') — that's why an inceptor is someone who begins or initiates.