1. Constituting a tube; having hollow tubes (as for the passage of fluids)
   - tubular, cannular, tubelike, tube-shaped

See also: hollow

• identification
• identification number
• identification particle
• identified
• identifier
• identify
• Identikit
• Identikit picture
• identity
• identity card
• identity crisis
• identity element
• identity matrix
• identity operator
• identity theft
• identity verification
• ideogram
• ideograph
• ideographic
• ideographically
• ideography
• ideologic
• ideological
• ideological barrier
• ideologically