HALF = METADE
MIDDLE = MEIO middle 1 noun
mid‧dle 1 S1 W2
1centre part the middle the part that is nearest the centre of something, and furthest from the sides, edges, top, bottom etc the middle of We rowed out towards the middle of the lake.
in the middle (of something) Jo was standing in the middle of the room.
Those are my two brothers, and that's me in the middle.
The meat was burnt on the outside and raw in the middle.
a huge hole right in the middle of the lawn
through the middle (of something) The new road will go right through the middle of the wood.
down the middle (of something) Draw a line down the middle of the page. half 1
S1 W1 [only before noun]
1. 50%exactly or about 50% (½) of an amount, time, distance, number etchalf of Over half of the children live in one-parent families.
Only half the guests had arrived by seven o'clock.
If you look at our members, at least half are women.
half a mile/pound/hour etc half a pound of butter
It's about half a mile down the road.
She drank half a bottle of wine.
half a million dollarsFonte: http://www.ldoceonline.com/dictionary/half_1