The most common and most likely answer to this crossword clue is the 10 letter word KILOGRAMME
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More clues leading to the result KILOGRAMME
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Crossword Answer definitions
KILOGRAMME noun- In the International System of Units, the base unit of mass; conceived of as the mass of one litre of water, but now defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10-34 when expressed in units of kg⋅m2⋅s−1. Symbol: kg
- The unit of weight such that a one-kilogram mass is also a one-kilogram weight.