To fulfill is to fill full. If something is fully filled, it is not partially filled.
Here is Webster's definition:
- Main Entry: ful·fill
- Variant(s): or ful·fil \fu̇(l)-ˈfil also fə(l)-\
- Function: transitive verb
- Inflected Form(s): ful·filled; ful·fill·ing
- Etymology: Middle English fulfillen, from Old English fullfyllan, from full + fyllan to fill
- Date: before 12th century
1 archaic : to make full : fillI think this might have some bearing on some of our conversations (which are moving along marvelously, I might add).
<her subtle, warm, and golden breath…fulfills
him with beatitude — Alfred Tennyson>
2 a :
to put into effect : execute b :
to meet the requirements of (a business order) c : to bring to an end d :
to measure up to : satisfy
3 a :
to convert into reality b :
to develop the full potentialities of
As an aside, one of the primary messages of the 5 NT Historical Books, (the sixth division of the Bible Wheel) exemplifies how Christ FULFILLED the prophecies of the Old Testament:
You can read more about this in my article called The Sevenfold Canon.