What's the difference between accretion and attrition?

Accretion


Definition:

  • (n.) The act of increasing by natural growth; esp. the increase of organic bodies by the internal accession of parts; organic growth.
  • (n.) The act of increasing, or the matter added, by an accession of parts externally; an extraneous addition; as, an accretion of earth.
  • (n.) Concretion; coherence of separate particles; as, the accretion of particles so as to form a solid mass.
  • (n.) A growing together of parts naturally separate, as of the fingers toes.
  • (n.) The adhering of property to something else, by which the owner of one thing becomes possessed of a right to another; generally, gain of land by the washing up of sand or sail from the sea or a river, or by a gradual recession of the water from the usual watermark.
  • (n.) Gain to an heir or legatee, failure of a coheir to the same succession, or a co-legatee of the same thing, to take his share.

Example Sentences:

  • (1) Each process has been linked to the regulation of cholesterol accretion in the arterial cell.
  • (2) From the regression coefficients it was calculated that, for the accretion of 1 g body protein, the dietary amino acid requirements were (mg) threonine 47, valine 53, methionine + cystine 36, methionine 19, isoleucine 43, leucine 78, phenylalanine + tyrosine 84, phenylalanine 41, lysine 68 and tryptophan 12.
  • (3) This must involve the additional accretion or synthesis of dipicolinic acid.
  • (4) Protein accretion in the regenerating liver preceded mitosis, but was accompanied by increases in RNA content and fractional rates of protein synthesis (ks).
  • (5) Aggregated proteoglycans inhibit mineral accretion in vitro.
  • (6) The magnitude of the changes in growth performance, tissue accretion rates and body composition elicited by pGH were independent of strain.
  • (7) Consequently, size of the exchangeable Ca pool, accretion rate and balance across bone were higher in these goats.
  • (8) On the other hand, there was no increase in percent protein accretion (both 15% of weight gain).
  • (9) The absolute rate of MT accretion was less in macrophages incubated with 25 microM- as compared with 50 microM-Zn2+, owing to decreased and increased rates of MT synthesis and degradation respectively.
  • (10) Previously, we observed that HSV infection causes a 40-fold increase in cholesteryl ester (CE) accretion in arterial smooth muscle cells due, in part, to a substantial decrease in CE hydrolysis.
  • (11) During the suckling period there is high hepatic protein accretion and the portal vein glutamine concentration is twice that in the adult, whereas hepatic vein glutamine concentration is similar between adult and suckling rats.
  • (12) Carcass protein accretion rate increased (P less than .001) up to approximately 150 micrograms of pST.kg BW-1.d-1, whereas lipid deposition decreased (P less than .001) with each incremental dose of pST.
  • (13) On d -22, 67 and 155, blood was sampled every 20 min for 8 h. Relative to LPN, HPN increased (P less than .01) ADG by 28%, carcass weight by 26% and accretion of carcass fat by 109% and carcass protein by 20%.
  • (14) However, much of the localization to the tumors was due to nonspecific factors, as evidenced by the considerable tumor accretion of the control antibody.
  • (15) Mithramycin at the low dosage had little effect on the rate of bone accretion.
  • (16) The analysis of chromatin, therefore, indicates that unligated repair sites are sites of protein accretion which block exonuclease III action.
  • (17) Retention of Ca and P in both groups was significantly below estimates of intrauterine accretion.
  • (18) Fractional accretion rates of total body 3-methylhistidine containing proteins (actin and myosin) were elevated 40% to 120% in rats fed a high-carbohydrate diet containing 10 or 100 ppm cimaterol for 1 week.
  • (19) The investigators' hypothesis that there would be more accretions on the side not involved in osseous surgery and pocket eradication was not supported in this study.
  • (20) Our previous studies with a 90Y-labelled antibody against carcinoembryonic antigen (CEA) conjugated to the cyclic anhydride-DTPA (CA-DTPA) indicated that the accretion of 90Y in the bone may limit the application of 90Y-labelled antibodies for therapy.

Attrition


Definition:

  • (n.) The act of rubbing together; friction; the act of wearing by friction, or by rubbing substances together; abrasion.
  • (n.) The state of being worn.
  • (n.) Grief for sin arising only from fear of punishment or feelings of shame. See Contrition.

Example Sentences:

  • (1) The results of this study indicate that, with all other factors held constant, a patient's attrition score tends to: increase with age, increase with bite depth, decrease initially with overjet until a critical value and then increase, and be unaffected by sex, interincisal angle, U1 to NA angle, Angle classification, posterior or anterior cross bites.
  • (2) The observed degree of efficacy of amoxicillin prophylaxis and of tympanostomy tube insertion must be viewed in light of the fact that study subjects proved not to have been at as high risk for acute otitis media as had been anticipated and in view of the differential attrition rates.
  • (3) The British financial services industry spent £92m last year lobbying ­politicians and regulators in an "economic war of attrition" that has secured a string of policy victories.
  • (4) This paper examines attrition among applicants to a methadone maintenance program before and after it began to require that applicants have a relative or close friend willing to act as a treatment sponsor.
  • (5) No statistically significant differences could be found between groups with respect to clinical signs, occlusal interferences, or dental attrition.
  • (6) Attrition of the filarial numbers occurred primarily within the midgut during the first 24 h following ingestion and was greater in Cx annulirostris than Ae.notoscriptus.
  • (7) By the attritional standards of the modern game, Djokovic took a relatively whizzbang three hours and 40 minutes to win 6-7, 7-6, 6-3, 6-2 and complete a hat-trick of titles here (the first to do so since Roy Emerson), to go with his first Australian championship five years ago.
  • (8) Two factors measured at intake, motivation and social functioning, showed statistically significant interactions between race and attrition.
  • (9) Diagnosis of this complication in the setting of severe joint damage is difficult as AADA and sepsis share certain characteristics--an initial, rapidly progressive, severely painful course and radiographs which show rapidly destructive changes with marked cartilage loss, bone attrition, and virtual absence of osteophyte or cyst response.
  • (10) As well as the risk of attrition to the Tories, the Lib Dems will be mindful that traditional Labour voters will be wary of proposed Lib Dem cuts in public spending – an issue that promises to take centre stage at the next election.
  • (11) Compared with gradual methadone reduction, clonidine treatment resulted in higher levels of withdrawal symptoms and side effects, earlier onset of withdrawal discomfort, earlier attrition, earlier termination of withdrawal discomfort, and a posttreatment course of drug use that was more consistent with success status during the study treatment.
  • (12) Attrition threatens the external validity of prevention studies because, to the extent that study dropouts are different from remaining subjects, the results of the study may not be generalizable to study dropouts.
  • (13) These profiles are compared to a review of the literature in higher education on fellowships, faculty attrition, faculty activities, tenure, and promotion.
  • (14) Over the last 11 years, the Conservative government has waged a war of attrition against First Nations.
  • (15) With several African leaders nearing their term limits, notably Paul Kagame in neighbouring Rwanda, the war of attrition in this vast, mineral-rich nation is being closely watched across the continent.
  • (16) This study examined attrition and weight loss in 235 female obese binge eaters, episodic overeaters, and nonbingers treated by a 26-week program of behavior modification and very low calorie diet.
  • (17) Progressive ventricular dilation and associated attrition of brain tissue was observed in SHRs of both sexes after 4 weeks of age, and was present in animals obtained from two different suppliers.
  • (18) This study examined the relationships among demographics, personality variables, drug use, and early attrition from substance abuse treatment.
  • (19) It is suggested that the observed differences in malocclusion prevalence were related to exogenous factors, primarily the pronounced dental attrition.
  • (20) The authors review factors affecting student attrition and retention in academic settings.