What's the difference between past and retro?

Past


Definition:

  • (v.) Of or pertaining to a former time or state; neither present nor future; gone by; elapsed; ended; spent; as, past troubles; past offences.
  • (n.) A former time or state; a state of things gone by.
  • (prep.) Beyond, in position, or degree; further than; beyond the reach or influence of.
  • (prep.) Beyond, in time; after; as, past the hour.
  • (prep.) Above; exceeding; more than.
  • (adv.) By; beyond; as, he ran past.

Example Sentences:

  • (1) In this study of ten consecutive patients sustaining molten metal injuries to the lower extremity who were treated with excision and grafting, treatment with compression Unna paste boot was compared with that with conventional dressing.
  • (2) Anti-corruption campaigners have already trooped past the €18.9m mansion on Rue de La Baume, bought in 2007 in the name of two Bongo children, then 13 and 16, and other relatives, in what some call Paris's "ill-gotten gains" walking tour.
  • (3) In the past, the interpretation of the medical findings was hampered by a lack of knowledge of normal anatomy and genital flora in the nonabused prepubertal child.
  • (4) A diplomatic source said the killing appeared particularly unusual because of Farooq lack of recent political activity: "He was lying low in the past two years.
  • (5) Past imaging techniques shown in the courtroom have made the conventional rules of evidence more difficult because of the different informational content and format required for presentation of these data.
  • (6) In the past 6 years 26 patients underwent operation for recurrent duodenal ulcer after what was considered to be an "adequate" initial operation.
  • (7) Over the past decade the use of monoclonal antibodies has greatly advanced our knowledge of the biological properties and heterogeneity that exist within human tumours, and in particular in lung cancer.
  • (8) He had been extremely frustrated that indicators of economic recovery over the past few days had been drowned out by the clamour over the Labour leadership.
  • (9) We reviewed our experience with femorofemoral bypass during the past 10 years to define its role relative to other methods in the treatment of aortoiliac occlusive disease.
  • (10) Gallic wine sales in the UK have been tumbling for the past 20 years, but the news that France, once the largest exporter to these shores, has slipped behind Australia, the United States, Italy and now South Africa will have producers gnawing their knuckles in frustration.
  • (11) But not only did it post a larger loss than expected, Amazon also projected 7% to 18% revenue growth over the busiest shopping period of the year, a far cry from the 20%-plus pace that had convinced investors to overlook its persistent lack of profit in the past.
  • (12) I’m hopeful but I just can’t get over all my experiences in the past.
  • (13) Significant changes have occurred within the profession of pharmacy in the past few decades which have led to loss of function, social power and status.
  • (14) Eighty interposition mesocaval shunts, using a knitted Dacron large diameter prosthesis, have been performed during the past five and one-half years.
  • (15) Although they were praised in the last five years as the most efficient drugs against cancer and infectious diseases, no great success was clinically and experimentally reported in the past.
  • (16) Over the past 20 years the rag-and-bone trade has had a makeover.
  • (17) Cameron famously broke with the past, and highlighted his green credentials, by posing with huskies on a visit to Svalbard in the Norwegian Arctic in 2006.
  • (18) At first it looked as though the winger might have shown too much of the ball to the defence, yet he managed to gain a crucial last touch to nudge it past Phil Jones and into the path of Jerome, who slipped Chris Smalling’s attempt at a covering tackle and held off Michael Carrick’s challenge to place a shot past an exposed De Gea.
  • (19) They argue that the US, the world's largest producer of greenhouse gases per capita (China recently surpassed us in sheer volume), needs to lead the fight to limit carbon emissions, rather continuing to block global treaties as it has done in the past.
  • (20) Over the past decade, the quinolone antimicrobial class has enjoyed a renaissance with the emergence of the fluoroquinolone subclass.

Retro


Definition:

Example Sentences:

  • (1) Computed Tomography was used to demonstrate the increased retro-orbital fat.
  • (2) To investigate the topochemical preference of backbone and side chains, unusual amino acids, including beta-methylphenylalanine7 or 11, beta-methyltryptophan8, as well as backbone modifications such as retro-inverso structures have been incorporated.
  • (3) retro-, herpes- and rhabdoviruses), virus adsorption to the outer cell membrane.
  • (4) The extent of conversion of retro-3-dehydroretinyl acetate into 3-dehydrovitamin A was much smaller than that of the conversion of retro-retinyl acetate into vitamin A.
  • (5) In two cases the author has successfully carried out retro-sternal transposition "of necessity", at 6 months and 4 years after coloesophagoplasty in the pre-thoracic variant.
  • (6) In cases of spondyl- and retro-olisthetic instability the upper vertebra moved posteriorly during traction and anteriorly during compression.
  • (7) Retro-molar trigones call for combined telecobaltherapy-electrontherapy;--curie-therapy is too difficult in this area.
  • (8) On the average, 8.65 fiber bundles of the vagus nerve leave the retro-olivary area.
  • (9) The retro-analogs of deaminotocinamide, tested at concentrations up to 10)-5)M, were found to be without activity as agonists or antagonists in the oxytocic assay.
  • (10) Combined with the ILD and difference between bilateral I-VIPL, must be useful for determining the location of retro-cochlear lesions.
  • (11) Lisa and Brian converted the old wooden schoolhouse six years ago and the design is bright and eclectic, think retro school desks, a funky red kitchen, a clear geodesic dome in the garden for stargazing and chill-out time and a giant chess set on the lawn.
  • (12) We believe that simultaneous presence of oedema and effusion in both intra- and retro-peritoneal cavities along with renal enlargement is in practice pathognomic of EHF.
  • (13) These short films aren't always musical; Laser Cats is a deliberately retro-amateurish sci-fi series about mutant cats who shoot lasers from their eyes, while a student film about giraffes claims that they are from outer space and will destroy mankind.
  • (14) Drilling away one or several segments realizes a trans-petrous approach which always begins by drilling away the posterior-external segment, the retro-labyrinthine segment.
  • (15) After documentation of significant ischemia (EKG, left atrial pressure), the crossclamp of the retro-IMA graft was removed.
  • (16) The existence of the retro-esophageal segment of the aorta was confirmed by left ventriculography and computerized axial tomography.
  • (17) Retro-orbital tissue membranes have been shown to have adenylate cyclase activity which can be stimulated by thyrotropin and by an exophthalmogenic factor derived from the thyrotropin molecule by partial pepsin digestion.
  • (18) Since lymphatic invasions are unusual in children, surgical exploration of the retro-peritoneal space is no longer considered necessary for the stagging and is replaced nowadays by ultrasonography and CT scan.
  • (19) We found that nerves from the superior cervical and pterygopalatine ganglia form a plexus at the orbital apex corresponding to the retro-orbital plexus found in rabbit, monkey and man.
  • (20) Three cases of retro-placental hematoma are reported.