introductory
UK: ˌɪntrəˈdʌktəri | US: ˌɪntrəˈdʌktəri
adj. serving as an introduction; preliminary or basic
adj. designed to introduce someone to a subject or skill
The word "introductory" derives from Latin roots. The prefix "intro-" (from Latin intro, meaning "within" or "inward") combines with "duct" (from Latin ducere, meaning "to lead"), forming "introduce" (to lead into). The suffix "-ory" (from Latin -orius) turns the verb into an adjective, giving "introductory" its modern meaning of "serving to introduce." The logic follows the idea of guiding someone into a new subject or experience.
The professor gave an introductory lecture on quantum mechanics.
This book includes an introductory chapter on basic grammar rules.
The workshop is designed as an introductory course for beginners.
She wrote an introductory email to her new colleagues.
The museum offers introductory tours for first-time visitors.