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perfunctory
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< ptomaine poisoning
PTSD >
pto·sis
(t
s
s)
KEY
NOUN:
pl.
pto·ses
(-s
z)
KEY
Abnormal lowering or drooping of an organ or a part, especially a drooping of the upper eyelid caused by muscle weakness or paralysis.
ETYMOLOGY:
Greek
pt
sis
,
fall
, from
piptein
, pt
-
,
to fall
; see
pet-
in Indo-European roots
OTHER FORMS:
pto
tic
(-t
k)
KEY
(Adjective)
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