abecedarian /ā-bi-sē-dāˈri-ən/

1. Relating to the ABC
2. Rudimentary
3. Arranged in the manner of an acrostic

1. A learner of the ABC, a beginner
2. A teacher of the ABC
3. An Anabaptist of a sect that rejected all learning

• ornithology
• ornithomancies
• ornithomancy
• ornithomantic
• ornithomorph
• ornithomorphic
• ornithomorphs
• ornithophilies
• ornithophilous
• ornithophily
• ornithophobia
• ornithophobias
• ornithopod
• Ornithopoda
• ornithopods
• ornithopter
• ornithopters
• ornithorhynchus
• ornithosaur
• ornithosaurs
• ornithoscopies
• ornithoscopy
• ornithoses
• ornithosis
• Orobanchaceae