dilater
Instrument that widens
One who dilates—expands, widens, or enlarges something.
The word appears almost exclusively in medical contexts, referring to an instrument or muscle that opens a passage or cavity: a cervical dilater, the dilater muscles of the iris.
The spelling dilator is more common.
Learner or eye opening
- irisEye's pigmented disc
- eye dropsTopical ocular medication
- atropineAnticholinergic alkaloid medication
- ophthalmoscopeDevice for viewing retinas
retina · examination · fundus · vision · refraction · accommodation · photophobia · eyecare
Receptacle for contents
- arteryOxygen-rich blood conduit
- veinVessel toward heart
- bronchusLung's main air tube
- esophagusFood tube to stomach
cervix · urethra · sphincter · smooth muscle · lumen · vasodilator · nitrate · blood flow
pupil
Learner or eye opening
- irisEye's pigmented disc
- eye dropsTopical ocular medication
- atropineAnticholinergic alkaloid medication
ophthalmoscope · retina · examination · fundus · vision · refraction · accommodation · photophobia · eyecare · optometrist
vessel
Receptacle for contents
esophagus · cervix · urethra · sphincter · smooth muscle · lumen · vasodilator · nitrate · blood flow · relaxation
expander
Something that widens
tool · instrument · bore · aperture · opening · caliber · reamer · spreader · socket · piercing
dilaterconstrictor
Snake killing by compression
contractor · compressor · narrower · tightener · sphincter
dilaterconstrictor
Snake killing by compression
vasoconstrictor · sphincter · bronchoconstrictor · contractor · astringent
- dilated pupilsWidened eye apertures
- time dilationClocks slow at speed
- cervical dilationWidening of womb's exit
- pupil dilationEye opening widening
- blood vessel dilation
- dilated eye examEye check using pupil-enlarging drops
dilate, dilated, dilates, dilating, dilation, dilatation, dilator, dilators, dilatable