column inch
US /ˈkɑː.ləm ɪntʃ/
UK /ˈkɑː.ləm ɪntʃ/

1.
pouce de colonne
a unit of area for measuring newspaper or magazine space, equal to one inch of a column
:
•
The advertisement took up five column inches in the local newspaper.
L'annonce occupait cinq pouces de colonne dans le journal local.
•
Newspapers often charge for advertising space by the column inch.
Les journaux facturent souvent l'espace publicitaire au pouce de colonne.