To obturate is to block an opening. Your dentist may obturate the hole where she performed a root canal. If she doesn't, you'll be in some serious pain.

The verb obturate is really more formal or technical than an everyday word like "block" or "obstruct," but you can use it as a substitute if you want to. It's more often used to describe the mechanism of a firearm, in which a bullet is designed to obturate the inside of a gun's barrel, increasing the pressure with which it's fired. The Latin root, obturat, means "stopped up."

Definitions of obturate

v block passage through

block, close up, impede, jam, obstruct, occlude
disengage, free
free or remove obstruction from
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block off, blockade
obstruct access to
barricade, barricado
block off with barricades
prevent access to by barricading
asphyxiate, choke, stifle, suffocate
impair the respiration of or obstruct the air passage of
tie up
restrain from moving or operating normally
dam, dam up
obstruct with, or as if with, a dam
block out, screen
prevent from entering
earth up, land up
block with earth, as after a landslide
bar, barricade, block, block off, block up, blockade, stop
render unsuitable for passage
back up, choke, choke off, clog, clog up, congest, foul
become or cause to become obstructed
gum up
stick together as if with gum
block off, close off, shut off
block off the passage through
protect from light, heat, or view
bar access to
crap up
become obstructed or chocked up
block, choke up, lug, stuff
silt, silt up
become chocked with silt
Type of:
hinder, impede
be a hindrance or obstacle to

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