What's the difference between additional and extra?

Additional


Definition:

  • (a.) Added; supplemental; in the way of an addition.
  • (n.) Something added.

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) Apparently, the irradiation with visible light of a low intensity creates an additional proton gradient and thus stimulates a new replication and division cycle in the population of cells whose membranes do not have delta pH necessary for the initiation of these processes.
  • (3) In addition, this pretreatment protocol did not modify the recipient immune response against B-lymphocyte alloantigens which developed in unsuccessful transplants.
  • (4) In addition, intravenous injection of complexes into rabbits showed optimal myocardial images with agents of intermediate lipophilicity.
  • (5) The pattern of the stressor that causes a change in the pitch can be often identified only tentatively, if there is no additional information.
  • (6) In addition, DDT blocked succinate dehydrogenase and the cytochrome b-c span of the electron transport chain, which also secondarily reduced ATP synthesis.
  • (7) Addition of phospholipase A2 from Vipera russelli venom led to a significant increase in the activity of guanylate cyclase in various rat organs.
  • (8) As the percentage of rabbit feed is very small compared to the bulk of animal feeds, there is a fair chance that rabbit feed will be contaminated with constituents (additives) of batches previously prepared for other animals.
  • (9) Insensitive variants die more slowly than wild type cells, with 10-20% cell death observed within 24 h after addition of dexamethasone.
  • (10) 5-Azacytidine (I) stability was increased approximately 10-fold over its stability in water or lactated Ringer injection by the addition of excess sodium bisulfite and the maintenance of pH approximately 2.5.
  • (11) In addition to oncogenes, the transferred DNA contains genes that direct the synthesis and exudation of opines, which are used as nutrients by the bacteria.
  • (12) We sought additional evidence for an inverse relationship between functional CTL-target cell affinity on the one hand, and susceptibility of the CTL-mediated killing to inhibition by alpha LFA-1 and alpha Lyt-2,3 monoclonal antibodies on the other hand.
  • (13) These studies, in addition to demonstrating that the placenta contains TRH deamidase activity, suggest that losses of fetal TRH through the placenta are not large.
  • (14) In addition autoradiography was performed to localize labelled cells in the inner ear.
  • (15) of PLA2 caused marked degranulation of mast cells in the rat mesentery which was facilitated by addition of calcium ion (10 mM) but antagonized by pretreating with three antiinflammatory agents.
  • (16) M NET is currently installed in referring physician office sites across the state, with additional physician sites identified and program enhancements under development.
  • (17) Here we show that this induction of AP-2 mRNA is at the level of transcription and is transient, reaching a peak 48-72 hr after the addition of RA and declining thereafter, even in the continuous presence of RA.
  • (18) In addition to their involvement in thrombosis, activated platelets release growth factors, most notably a platelet-derived growth factor (PDGF) which may be the principal mediator of smooth muscle cell migration from the media into the intima and of smooth muscle cell proliferation in the intima as well as of vasoconstriction.
  • (19) Subtypes of HBs Ag are already of great use in the epidemiology of hepatitis B virus infections; yet they may have additional significance.
  • (20) When subjects centered themselves actively, or additionally, contracted trunk flexor or extensor muscles to predetermined levels of activity, no increase in trunk positioning accuracy was found.

Extra


Definition:

  • (a.) Beyond what is due, usual, expected, or necessary; additional; supernumerary; also, extraordinarily good; superior; as, extra work; extra pay.
  • (n.) Something in addition to what is due, expected, or customary; something in addition to the regular charge or compensation, or for which an additional charge is made; as, at European hotels lights are extras.

Example Sentences:

  • (1) Stress is laid on certain principles of diagnostic research in the event of extra-suprarenal pheochromocytomas.
  • (2) We’re learning to store peak power in all kinds of ways: a California auction for new power supply was won by a company that uses extra solar energy to freeze ice, which then melts during the day to supply power.
  • (3) In Essex, police are putting on extra patrols during and after England's first match and placing domestic violence intelligence teams in police control rooms.
  • (4) These data show an extra-hepatic lipolytic effect of glucagon in vivo, but do not illuminate the significance of this effect in the intact animal.
  • (5) Metastatic tumors of the small bowel from extra-abdominal sites are rare.
  • (6) In the univariate life-table analysis, recurrence-free survival was significantly related to age, pTNM category, tumour size, presence of certain growth patterns, tumour necrosis, tumour infiltration in surrounding thyroid tissue and thyroid gland capsule, lymph node metastases, presence of extra-nodal tumour growth and number of positive lymph nodes, whereas only tumour diameter, thyroid gland capsular infiltration and presence of extra-nodal tumour growth remained as significant prognostic factors in the multivariate analysis.
  • (7) Extra-adrenal non-functioning retroperitoneal paragangliomas are rare tumors.
  • (8) The behavior of the retrograde H deflection in respect to the first extra beat following the premature QRS complex helped in excluding bundle branch reentry.
  • (9) Gove said in the interview that he did not want to be Tory leader, claiming that he lacked the "extra spark of charisma and star quality" possessed by others.
  • (10) The decrease of the A.L.O.S., the extra-regional recruitment and the shift of in-patient care toward day care show the development of specialization of this discipline.
  • (11) There was no association between testicular dysfunction and the presence of extra-articular features of rheumatoid arthritis.
  • (12) The fact that it is still used is regrettable yet unavoidable at present, but the average quantity is three times less than the mercury released into the atmosphere by burning the extra coal need to power equivalent incandescent bulbs.
  • (13) Stray bottles were thrown over the barriers towards officers to cheers and chants of: “Shame on you, we’re human too.” The Met deployed what it described as a “significant policing operation”, including drafting in thousands of extra officers to tackle expected unrest, after previous events ended in arrests and clashes with police across the centre of the capital.
  • (14) True Love Impulse Body Spray, Simple Kind to Skin Hydrating Light Moisturiser and VO5 Styling Mousse Extra Body marked double-digit price rises on average across the four chains.
  • (15) Substantial variations were identified in the point of origin of 6 of 41 arterial branches; extra vessels and absence of vessels were uncommon.
  • (16) Restriction analysis suggested that the inserts of both recombinant plasmids are derived from the identical portion in pHN671 and that the insert of pHPB14, compared with that of pHPB12, has an extra 5.3 kb in length.
  • (17) Sir James Crosby, the ITV senior independent non-executive director, explained why the board had opted to retain Grade's services for an extra year: "It was the unanimous view of ITV's independent non-executive directors that it would be in the best interests of the company and its shareholders to ask Michael to extend his time as executive chairman.
  • (18) Rule-abiding parents can get a monthly stipend, extra pension benefits when they are older, preferential hospital treatment, first choice for government jobs, extra land allowances and, in some case, free homes and a tonne of free water a month.
  • (19) One mortgage payer, writing on the MoneySavingExpert forum, said: "They are asking for an extra £200 per month for the remaining nine years of our mortgage.
  • (20) The next implanted device will have: a. constant current; b. programming of a particular current value for each electrode; and c. stimulation of the cochlear nerve through an extra cochlear electrode bearer, allowing deep implantation without deafness.