The most common and most likely answer to this crossword clue is the 8 letter word KILOGRAM
I've seen this crossword clue in Financial Times
K
I
L
O
G
R
A
M
More clues leading to the result KILOGRAM
- Evangelist recalled holding one record mass
- I record Mark’s riposte about mass in Paris
- Spilling milk crossing rough road regularly wasted well over two pounds
- International record held by Mark lifting weight
- Constant distribution of oil and pulses, a basic norm for mass representation
- Lightweight metalworking complex went bust — was abandoned
Buddy explains!
The straight part
We know that "mass" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case mass = kilogram.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does KILOGRAM mean?
KILOGRAM 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.