What's the difference between over and upon?

Over


Definition:

  • (prep.) Above, or higher than, in place or position, with the idea of covering; -- opposed to under; as, clouds are over our heads; the smoke rises over the city.
  • (prep.) Across; from side to side of; -- implying a passing or moving, either above the substance or thing, or on the surface of it; as, a dog leaps over a stream or a table.
  • (prep.) Upon the surface of, or the whole surface of; hither and thither upon; throughout the whole extent of; as, to wander over the earth; to walk over a field, or over a city.
  • (prep.) Above; -- implying superiority in excellence, dignity, condition, or value; as, the advantages which the Christian world has over the heathen.
  • (prep.) Above in authority or station; -- implying government, direction, care, attention, guard, responsibility, etc.; -- opposed to under.
  • (prep.) Across or during the time of; from beginning to end of; as, to keep anything over night; to keep corn over winter.
  • (prep.) Above the perpendicular height or length of, with an idea of measurement; as, the water, or the depth of water, was over his head, over his shoes.
  • (prep.) Beyond; in excess of; in addition to; more than; as, it cost over five dollars.
  • (prep.) Above, implying superiority after a contest; in spite of; notwithstanding; as, he triumphed over difficulties; the bill was passed over the veto.
  • (adv.) From one side to another; from side to side; across; crosswise; as, a board, or a tree, a foot over, i. e., a foot in diameter.
  • (adv.) From one person or place to another regarded as on the opposite side of a space or barrier; -- used with verbs of motion; as, to sail over to England; to hand over the money; to go over to the enemy.
  • (adv.) Also, with verbs of being: At, or on, the opposite side; as, the boat is over.
  • (adv.) From beginning to end; throughout the course, extent, or expanse of anything; as, to look over accounts, or a stock of goods; a dress covered over with jewels.
  • (adv.) From inside to outside, above or across the brim.
  • (adv.) Beyond a limit; hence, in excessive degree or quantity; superfluously; with repetition; as, to do the whole work over.
  • (adv.) In a manner to bring the under side to or towards the top; as, to turn (one's self) over; to roll a stone over; to turn over the leaves; to tip over a cart.
  • (adv.) At an end; beyond the limit of continuance; completed; finished.
  • (a.) Upper; covering; higher; superior; also, excessive; too much or too great; -- chiefly used in composition; as, overshoes, overcoat, over-garment, overlord, overwork, overhaste.
  • (n.) A certain number of balls (usually four) delivered successively from behind one wicket, after which the ball is bowled from behind the other wicket as many times, the fielders changing places.

Example Sentences:

Upon


Definition:

  • (prep.) On; -- used in all the senses of that word, with which it is interchangeable.

Example Sentences:

  • (1) Synthesis of choline esterase on the medium with acetylcholine at a concentration of 1% was increased more than twofold upon addition of glucose at a concentration of 0.1%.
  • (2) Cellulase regulation appears to depend upon a complex relationship involving catabolite repression, inhibition, and induction.
  • (3) These results show that the pathogenic phenotypes of MCF viruses are dissociable from the thymotropic phenotype and depend, at least in part, upon the enhancer sequences.
  • (4) We have investigated the increase in the spcDNA population upon cycloheximide treatment of individual sequences, which are found to amplify differentially.
  • (5) They had allegedly agreed that Younous would not be charged with any crime upon his arrival there and that he would not be detained in Morocco for longer than 72 hours.
  • (6) Induction of labor, based upon only (1) a finding of meconium in the amniocentesis group or (2) a positive test in the OCT group, was nearly three times more frequent in the amniocentesis group.
  • (7) The effects of glucagon-induced insulin secretion upon this lipid regulation are discussed that may resolve conflicting reports in the literature are resolved.
  • (8) The presently available data allow us to draw the following conclusions: 1) G proteins play a mediatory role in the transmission of the signal(s) generated upon receptor occupancy that leads to the observed cytoskeletal changes.
  • (9) We have evaluated the life-span of B lymphocytes by measuring the functional reactivity of normal B cells upon transfer into xid mice, which do not respond to anti-mu, fluoresceinated-Ficoll (FL-Ficoll) and 2,4,6-trinitrophenyl aminoethylcarbamylmethyl Ficoll (TNP-Ficoll).
  • (10) The third route was quantitated by its sensitivity to probenecid and its activity was increased in saline buffers and upon addition of glucose and was inhibited by oligomycin.
  • (11) This experimental system allows separation of three B lymphocyte developmental stages: early differentiation in vitro, progression to IgM secretion in vivo, and late differentiation dependent upon mature T lymphocytes in vivo.
  • (12) Data is available to support the early influences of enamel organ epithelium upon a responding mesenchyme in the determination of dental morphogenetic fields (Dryburg, 1967; Miller, 1969).
  • (13) Batson believes there is a “mood” that needs to be seized upon.
  • (14) Hypnosis might be looked upon as a method by which an unscrupulous person could sustain such a state of powerlessness in a victim.
  • (15) Based upon our clinical experience and this review of the literature, a suggested management protocol is presented.
  • (16) Group teaching compared to individualized teaching of the patients to collect their own aliquots did not appear to have a measurable effect upon the levels of bacteriuria.
  • (17) It appears that the effects of monocular lid suture upon MIN are in most respects similar to the effects of monocular lid suture previously reported for the A laminae.
  • (18) Following mass disasters and individual deaths, dentists with special training and experience in forensic odontology are frequently called upon to assist in the identification of badly mutilated or decomposed bodies.
  • (19) Accumulating evidence indicates that for most tumors, the switch to the angiogenic phenotype depends upon the outcome of a balance between angiogenic stimulators and angiogenic inhibitors, both of which may be produced by tumor cells and perhaps by certain host cells.
  • (20) Based upon the analysis of 1015 case records of patients, aged 16-70, with different hip joint pathology types, carried out during 1985-1990, there were revealed mistakes and complications after reconstructive-restorative operations.