Infectious Diseases, National Institute of Allergy and (NIAID) - intravitreal
- infrascapular region
- infrasegmental vein
- infrasonic
- infrasonic frequency
- infrasound
- infraspecific
- infraspinatus
- Infraspinatus muscle
- infraspinatus reflex
- infraspinous
- infraspinous fossa
- infrasplenic
- infrasternal
- infrasternal angle of thorax
- infrastructure
- infrasubspecific
- infratemporal
- infratemporal crest
- infratemporal fossa
- infratemporal region
- infratemporal surface of greater wing of sphenoid bone
- infratemporal surface of maxilla
- infratentorial
- infrathoracic
- infratonsillar
- infratracheal
- infratrochlear
- infratrochlear nerve
- infratubal
- infratympanic
- infraumbilical
- infravergence
- infraversion
- infravesical
- infrequent menstruation
- infrequent pulse
- infriction
- INFSEC
- Infumorph
- infundibula
