Definition of 直積 (ちょくせき)
ちょくせき
                        直積
ちょくせき
chokuseki
noun
•
        
direct product, Cartesian product(mathematics)
Related Kanji
| 直 | straightaway, honesty, frankness, fix, repair | 
| 積 | volume, product (x*y), acreage, contents, pile up, stack, load, amass |