imperceptible
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adjective
impossible
to
perceive
:
(微小なために) «…に» 感じられない, 感知されない, 気づかれない(ほどわずかな) «to»
e.g.
his head moved in an almost imperceptible nod.
DERIVATIVES
imperceptibility
|ˌimpərˌseptəˈbilədē| noun
ORIGIN
late
Middle English
: from
French
, or from medieval
Latin
imperceptibilis
, from
in-
‘
not
’ +
perceptibilis
, from the verb
percipere
(see
perceive
).