DEWAR VESSEL n.
uble-walled glass vessel for holding liquid air, etc., having the space between the walls exhausted so as to prevent conduction of heat, and sometimes having the glass silvered to prevent absorption of radiant heat; -- called also, according to the particular shape, Dewar bulb, Dewar tube, etc.
DROOP v.
ing downward; to sink or hang down, as an animal, plant, etc., from physical inability or exhaustion, want of nourishment, or the like. "The purple flowers droop." "Above her drooped a lamp." Tennyson. I saw him ten days before he died, and observed he began very much to droop and languish. Swift.
EFFETE a.
pable of producing young, as an animal, or fruit, as the earth; hence, worn out with age; exhausted of energy; incapable of efficient action; no longer productive; barren; sterile. Effete results from virile efforts. Mrs. Browning If they find the old governments effete, worn out, . . . they may seek new ones. Burke.…