https://drafts.csswg.org/css-tables-3/#min-content-guess says
Then, valid sizing methods are to be assigned to the columns by sizing type, yielding the following guesses:
- The min-content guess is the set of column width assignments where each column is assigned its min-content width
"min-content width" isn't linked. There is a
min-content-width definition at https://drafts.csswg.org/css-tables-3/#min-content-width but it doesn't seem to fit:
the intermediate min-content width for span N, where N is the number of columns in the table
It doesn't seem to fit because that definition refers to the whole table, not just to one column. Which is weird, because it's in the "Column Measures" section.