oversquareadj.

Brit.

/ˌəʊvəˈskwɛː/, U.S.

/ˌoʊvərˈskwɛ(ə)r/

Origin: Formed within English, by derivation. Etymons: over- prefix, square adj.

Etymology: < over- prefix + square adj.

Engineering.

Of an internal combustion engine or its cylinders: having a bore greater than the stroke.

ΘΚΠ

society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [adjective] > other specific types

six-cylinder1905

in-line1929

cold starting1930

oversquare1959

fixed-head1962

torquey1977

turbo-compounded1978

1959 Times 23 Sept. 5/4 The new engine is ‘over-square’ and has a cubic capacity of 6¼ litres.

1966 Economist 9 July p. xxv/1 If exaggerated, the over-square cylinder tends to have a wafer-thin combustion chamber with limited compression turbulence, and to suffer from indifferent combustion at low operating speeds.

1986 Sunday Mail (Brisbane) 26 Oct. 57/5 This motor is grossly oversquare, with pistons stroking some 41 mm in a 62 mm bore.

2001 National Post (Canada) 2 June e12/3 An oversquare bore and stroke of 76.0 × 68.8 millimetres yielded 2,496 cc, just under the 2.5 litre limit.

This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022).

单词	oversquare
释义	oversquareadj. Brit. /ˌəʊvəˈskwɛː/, U.S. /ˌoʊvərˈskwɛ(ə)r/ Origin: Formed within English, by derivation. Etymons: over- prefix, square adj. Etymology: < over- prefix + square adj. Engineering. Of an internal combustion engine or its cylinders: having a bore greater than the stroke. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [adjective] > other specific types six-cylinder1905 in-line1929 cold starting1930 oversquare1959 fixed-head1962 torquey1977 turbo-compounded1978 1959 Times 23 Sept. 5/4 The new engine is ‘over-square’ and has a cubic capacity of 6¼ litres. 1966 Economist 9 July p. xxv/1 If exaggerated, the over-square cylinder tends to have a wafer-thin combustion chamber with limited compression turbulence, and to suffer from indifferent combustion at low operating speeds. 1986 Sunday Mail (Brisbane) 26 Oct. 57/5 This motor is grossly oversquare, with pistons stroking some 41 mm in a 62 mm bore. 2001 National Post (Canada) 2 June e12/3 An oversquare bore and stroke of 76.0 × 68.8 millimetres yielded 2,496 cc, just under the 2.5 litre limit. This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022). < adj.1959
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