An abnormal particle (e.g. an air bubble or part of a clot) circulating in the blood.
Roget 261:
closure,
occlusion,
blockade;
shutting up
etc.
v.;
obstruction
etc.
(hindrance)
706;
embolus;
contraction
etc.
195;
infarction;
constipation,
obstipation†;
blind alley,
blind corner;
keddah†;
cul-de-sac,
caecum;
imperforation†,
imperviousness
etc.
adj.;
impermeability;
stopper
etc.
263.
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Roget 706:
prevention,
preclusion,
obstruction,
stoppage;
embolus,
embolism [Med.];
infarct [Med.];
interruption,
interception,
interclusion†;
hindrance,
impedition†;
retardment†,
retardation;
embarrassment,
oppilation†;
coarctation†,
stricture,
restriction;
restraint
etc.
751;
inhibition
etc.
761;
blockade
etc.
(closure)
261.
interference,
interposition;
obtrusion;
discouragement,
discountenance.
impediment,
let,
obstacle,
obstruction,
knot,
knag†;
check,
hitch,
contretemps,
screw loose,
grit in the oil.
bar,
stile,
barrier;
[barrier to vehicles]
turnstile,
turnpike;
gate,
portcullis.
beaver dam;
trocha†;
barricade
etc.
(defense)
717;
wall,
dead wall,
sea wall,
levee breakwater,
groyne†;
bulkhead,
block,
buffer;
stopper
etc.
263;
boom,
dam,
weir,
burrock†.
drawback,
objection;
stumbling-block,
stumbling-stone;
lion in the path,
snag;
snags and sawyers.
encumbrance,
incumbrance†;
clog,
skid,
shoe,
spoke;
drag,
drag chain,
drag weight;
stay,
stop;
preventive,
prophylactic;
load,
burden,
fardel†,
onus,
millstone round one's neck,
impedimenta;
dead weight;
lumber,
pack;
nightmare,
Ephialtes†,
incubus,
old man of the sea;
remora.
difficulty
etc.
704;
insuperable
etc.
471;
obstacle;
estoppel [Law];
ill wind;
head wind
etc.
(opposition)
708;
trammel,
tether
etc.
(means of restraint)
752;
hold back,
counterpoise.
[person who hinders]
damper,
wet blanket,
hinderer,
marplot,
killjoy;
party pooper [Coll.];
party crasher,
interloper.
trail of a red herring;
opponent
etc.
710.
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