Etymology
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periscope (n.)

viewing apparatus on a submarine, by which objects in a horizontal view may be seen through a vertical tube, 1899, formed in English from peri- "around" + -scope "instrument for viewing." Earlier (1865) a technical term in photography. Related: Periscopic.

Entries linking to periscope

peri- 

word-forming element in words of Greek origin or formation meaning "around, about, enclosing," from Greek peri (prep.) "around, about, beyond," cognate with Sanskrit pari "around, about, through," Latin per, from PIE root *per- (1) "forward," hence "in front of, before, first, chief, toward, near, around, against." Equivalent in sense to Latin circum-.

-scope 
word-forming element indicating "an instrument for seeing," from Late Latin -scopium, from Greek -skopion, from skopein "to look at, examine" (from PIE root *spek- "to observe").

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Definitions of periscope

periscope (n.)
an optical instrument that provides a view of an otherwise obstructed field;
From wordnet.princeton.edu

Dictionary entries near periscope

periphery

periphrasis

periphrastic

periplum

Periscian

periscope

perish

perishable

peristalsis

peristaltic

peristyle

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