periscopicallyadv.
/ˌpɛrᵻˈskɒpᵻkli/, U.S. /ˌpɛrəˈskɑpək(ə)li/ By means of or as if with a periscope; in the manner of a periscope.
ΚΠ
1917 Clearfield (Pa.) Progress 6 Dec. 4/2 The point where one could view periscopically the corresponding German sap, thirty yards away.
1929 Geogr. Jrnl. 73 202 The beach..was..pitted by the burrowings of vast numbers of tiny crabs which loitered just below the brink, peering periscopically for our passing.
1982 Financial Times 10 Apr. 10/4 Robert Mitchum and Curt Jurgens purred after each other periscopically over the war-torn Atlantic.
2001 Daily Tel. (Nexis) 19 May 14 Chunky, ovoid air vents poke periscopically out of the dash top.
This is a new entry (OED Third Edition, December 2005; most recently modified version published online March 2022).
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adv.1917- to the north-westward of
- to the northeastward
- to the northeastward of
- to the northwestward
- to the northwestward of
- to the notch
- to the nth
- to the nth degree
- to the nth power
- to the number of
- to the offward
- to the outmost
- to the outrance
- to the outside
- to the palaceward
- to the pith
- to the point
- to the point device
- to the point where
- to the power five
- to the power of five
- to the prejudice of
- to the prick
- to the proof
- to the punch