1835–6 R. Owen in Todd'sCycl. Anat. I. 551/1The great moto-sensitive chords. 
Ibid. ,Those two large moto-sensitive columns, which evidently represent..the spinal cord of the Vertebrata. 
1862 H. J. Carter in Ann. &Mag. Nat. Hist. Ser. iii. IX. 446A mass of minute polymorphic cells (Amœbæ) which..soon separated from their globular aggregation, and crept away from each other under moto-plastic forms. 
1895 Review of Rev. Nov. 395/2The motocycle, as the horseless carriage is to be named in future, has come to stay. 
1900 Pall Mall G. 17 Apr. 9/2 The only lady moto⁓cyclist who has met with any success in road races with men. 
1901 Pall Mall Mag. Sept. 64/2The moto-cyclette. 
1951 Motor Cycle Sport in Pictures 9 (caption) 1950 Moto-Cross victors. Left to right, B. W. Hall (B.S.A.), G. J. Draper (B.S.A.) and H. H. Lines (Ariel), three of the British team of 12 which won the Moto-Cross des Nations in Sweden. 
1960 Motor Cycling Sports Yearbk. 81 (heading)Scrambles and Moto-cross. 
Ibid. ,A dark cloud which has passed over the moto-cross world. 
1968 K. Bird Smash Glass Image vii. 85His machine kicked over the ground as if he were taking part in moto-cross. 
moto-
word-forming element meaning "motion, motor," from Latin motus, past participle of movere (see move, v.).
ORIGIN: from motor  adjective -o- 
moto-
combining form 
Etymology: motion (I) & motor (II)  
 : motion : motor 
< motofacient >
< motoneuron >
< motofacient >
< motoneuron >