The NCAA prescribes the maximum number or equivalency of scholarships for each sport.
If a school's athletic department offers the maximum allowed by the NCAA, the sport is considered fully-funded.......meaning fully-funded compared to the maximum allowed by the rules. If it offers less than the maximum, the sport is considered partially funded compared to the maximum allowed by the rules.
If this is confusing, we could say a school offers the maximum amount or less than the maximum amount, I suppose.
Anyway, whatever the terminology, I hope readers understand the substance of the distinction by now.
EDIT: In equivalency sports, such as men's tennis, a fully-funded program may.....and always does...... offer partial scholarships. If they didn't, men's tennis teams would have 4 players on the roster and the baseball team would have 11. So it is true that fully-funded equivalency sports offer partial (less than full) scholarships to players. Fully-funded "head-count" sports do not offer partial scholarships to players. If a "head-count" sport offers partial scholarships that means it is not fully-funded.
Here's a random link: (scroll down below the chart)