sap

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sap

(sap),
The juice or tissue fluid of a living organism.

SAP

sphingolipid activator protein>

SAP

Abbreviation for:
saponin
saporin
saposin
secreted acid phosphatase
secreted aspartic protease
sensory action potential
serum alkaline phosphatase
serum amyloid P
Single Assessment Process, see there 
situs ambiguus with polysplenia
SLAM-associated protein
slow action potential
spontaneous action potential
stable angina pectoris
standardised assessment of personality
Staphylococcus aureus protease
steroidogenesis activator polypeptide
Substance Abuse Professional
surfactant-associated protein
symptom-associated probability
systolic arterial pressure

sap

a watery liquid found within the vacuole of a plant cell (cell sap) and within conducting tissues of the VASCULAR BUNDLES.

SAP

serum alkaline phosphatase.
References in classic literature ?
When, however, we returned to Switzerland towards the end of June, and he found himself once more in the familiar and exhilarating air of the mountains, all his joyous creative powers revived, and in a note to me announcing the dispatch of some manuscript, he wrote as follows: "I have engaged a place here for three months: forsooth, I am the greatest fool to allow my courage to be sapped from me by the climate of Italy.
You go home draggin' your legs an' feelin' rotten, with all the life sapped outa you.
That they are, however, sadly sapped and blighted in their growth among the mass; and that there are influences at work which endanger them still more, and give but little present promise of their healthy restoration; is a truth that ought to be told.