What's the difference between under and undergo?

Under


Definition:

  • (prep.) Below or lower, in place or position, with the idea of being covered; lower than; beneath; -- opposed to over; as, he stood under a tree; the carriage is under cover; a cellar extends under the whole house.
  • (prep.) Denoting relation to some thing or person that is superior, weighs upon, oppresses, bows down, governs, directs, influences powerfully, or the like, in a relation of subjection, subordination, obligation, liability, or the like; as, to travel under a heavy load; to live under extreme oppression; to have fortitude under the evils of life; to have patience under pain, or under misfortunes; to behave like a Christian under reproaches and injuries; under the pains and penalties of the law; the condition under which one enters upon an office; under the necessity of obeying the laws; under vows of chastity.
  • (prep.) Denoting relation to something that exceeds in rank or degree, in number, size, weight, age, or the like; in a relation of the less to the greater, of inferiority, or of falling short.
  • (prep.) Denoting relation to something that comprehends or includes, that represents or designates, that furnishes a cover, pretext, pretense, or the like; as, he betrayed him under the guise of friendship; Morpheus is represented under the figure of a boy asleep.
  • (prep.) Less specifically, denoting the relation of being subject, of undergoing regard, treatment, or the like; as, a bill under discussion.
  • (adv.) In a lower, subject, or subordinate condition; in subjection; -- used chiefly in a few idiomatic phrases; as, to bring under, to reduce to subjection; to subdue; to keep under, to keep in subjection; to control; to go under, to be unsuccessful; to fail.
  • (a.) Lower in position, intensity, rank, or degree; subject; subordinate; -- generally in composition with a noun, and written with or without the hyphen; as, an undercurrent; undertone; underdose; under-garment; underofficer; undersheriff.

Example Sentences:

Undergo


Definition:

  • (v. t.) To go or move below or under.
  • (v. t.) To be subjected to; to bear up against; to pass through; to endure; to suffer; to sustain; as, to undergo toil and fatigue; to undergo pain, grief, or anxiety; to undergothe operation of amputation; food in the stomach undergoes the process of digestion.
  • (v. t.) To be the bearer of; to possess.
  • (v. t.) To undertake; to engage in; to hazard.
  • (v. t.) To be subject or amenable to; to underlie.

Example Sentences:

  • (1) Thirty-two patients (10 male, 22 female; age 37-82 years) undergoing maintenance haemodialysis or haemofiltration were studied by means of Holter device capable of simultaneously analysing rhythm and ST-changes in three leads.
  • (2) In 49 cases undergoing systemic lymphadenectomy 32 were found to have glandular involvement, of which both aortic and pelvic nodes were positive in 17 cases (53.1%), aortic nodes positive but pelvic negative in six (18.8%), and pelvic nodes positive but aortic negative in nine (28.1%).
  • (3) Squadron Leader Kevin Harris, commander of the Merlins at Camp Bastion, the main British base in Helmand, praised the crews, adding: "The Merlins will undergo an extensive programme of maintenance and cleaning before being packed up, ensuring they return to the UK in good order."
  • (4) The diffusion of Myocamicin in the prostatic tissue of patients undergoing prostatectomy after a single oral dose of 600 mg has been studied.
  • (5) During capillary growth when endothelial cells (EC) undergo extensive proliferation and migration and pericytes are scarce, hyaluronic acid (HA) levels are elevated.
  • (6) Peripheral blood monocytes undergo an oxidative burst similar to that seen in neutrophils.
  • (7) An experimental model was established in the ewe allowing one to predict with accuracy an antral follicle that coincidentally would either undergo ovulation (6-8 mm diameter) or atresia (3-4 mm diameter) following synchronization of luteal regression and the onset of the gonadotropin surge.
  • (8) The relative contributions of transcriptional and posttranscriptional regulation of gene expression to the increase in constitutively expressed cellular proteins were examined in mouse kidneys undergoing compensatory growth following unilateral nephrectomy (UNI-NX).
  • (9) The DDE also undergoes photocyclization to give dichlorofluorene derivatives.
  • (10) This study demonstrated that significant global and regional ventricular dysfunction develops immediately after removal of the papillary muscles, whereas myocardial contractility is preserved in patients undergoing mitral valve repair.
  • (11) All 80 adult cardiac surgery patients undergoing a cardiac operation at one institution during the final quarter of 1983 were included in this prospective study.
  • (12) Cholecystectomy provided successful treatment in three of the four patients but the fourth was too ill to undergo an operation; in general, definitive treatment is cholecystectomy, together with excision of the fistulous tract if this takes a direct path through the abdominal wall from the gallbladder, or curettage if the course is devious.
  • (13) Between January 1979 and April 1983, 113 children undergoing their first relapse of acute lymphoid leukemia (ALL) at any site were registered in Pediatric Oncology Group study 7834; 98 were eligible and evaluable.
  • (14) Electromagnetic interference presented as inhibition and resetting of the demand circuitry of a ventricular-inhibited temporary external pacemaker in a 70-year-old man undergoing surgical implantation of a permanent bipolar pacemaker generator and lead.
  • (15) This implies that these proteins are quantitatively absorbed from the peritoneum without undergoing modifications.
  • (16) Five normovolemic patients undergoing cardiac catheterization for atypical chest pain syndrome volunteered for this study.
  • (17) The cardiorespiratory effects of trichloroethylene supplementation of nitrous oxide-oxygen anesthesia, with simultaneous use of halothane at induction as needed, were studied in outpatient oral surgery patients undergoing dental extractions under general anesthesia.
  • (18) Persons with clinical abdominal findings, shock, altered sensorium, and severe chest injuries after blunt trauma should undergo the procedure.
  • (19) Forty five elderly patients undergoing total hip replacements were assessed one day before and two days after surgery in order to explore the relationship between pre-operative anxiety and post-operative delirium.
  • (20) In 29 patients undergoing duplex sonography of the hepatic artery, six (21%) had absence of a Doppler arterial pulse.