1. Representing the furthest possible extent of analysis or division into parts
   - unanalyzable [N. Amer], undecomposable

See also: simple

• train station
• train ticket
• train wreck
• trainable
• trainband
• trainbandsman
• trainbearer
• trained
• trained nurse
• trained worker
• trainee
• traineeship
• trainer
• training
• training college
• training program
• training school
• training ship
• training table
• trainload
• trainman
• trainmaster
• trainspotter
• traipse
• trait