Inter-Entity Boundary Line (IEBL)

single-entity charter flight

inter-agency cooperation

inter-chart relationship diagram (cart.)

inter-look dormant period (mines)

inter-theatre

inter-army flight

Inter-State Aviation Committee (IAC)

inter-tropical convergence zone (ITCZ)

inter pulse modulation (IPM)

deployment line; line of deployment (LD); line of departure

boundary

boundary dispute

boundary monitoring and analysis

cross-boundary interception

de jure boundary

national boundary

rear boundary

state boundary

boundary film

boundary friction

Bernoulli theorem on boundary energy

convergent zone of a boundary layer

kinematical boundary condition

laminar boundary layer

turbulent boundary layer

Reynolds number for boundary layer thickness

non-stable boundary layer

stable boundary layer

viscous instability of a boundary layer

wake of boundary layer

wake of boundary layer behind an aerofoil

boundary correction