1. Representing the furthest possible extent of analysis or division into parts
   "this weight of evidence is something mystical and unanalyzable"
   - undecomposable, unanalysable [Brit, Cdn]

See also: simple

• internuncial
• internuncio
• interoceanic
• interoception
• interoceptive
• interoceptor
• interocular lens implant
• interoperability
• interoperable
• interparietal suture
• interpellate
• interpellation
• interpenetrate
• interpenetration
• interpersonal
• interpersonal chemistry
• interphalangeal joint
• interphase
• interphone
• interplanetary
• interplanetary dust
• interplanetary gas
• interplanetary medium
• interplanetary space
• interplay