> as lemmas

1969 Proc. Royal Soc. 1968–9 A. 308 244 The main propulsion motor may be..a Raven mk 8 (total impulse 1·4 meganewton-seconds).

1975 Physics Bull. Apr. 165/1 Traditionally, standard forces up to meganewtons are produced on deadweight machines.

1996 New Scientist 6 July 37/2 While the shuttle's main engine produces a thrust of around 1.75 meganewtons, the aerospike will deliver almost 1.92 meganewtons.