What's the difference between extend and protrude?

Extend


Definition:

  • (v. t.) To stretch out; to prolong in space; to carry forward or continue in length; as, to extend a line in surveying; to extend a cord across the street.
  • (v. t.) To enlarge, as a surface or volume; to expand; to spread; to amplify; as, to extend metal plates by hammering or rolling them.
  • (v. t.) To enlarge; to widen; to carry out further; as, to extend the capacities, the sphere of usefulness, or commerce; to extend power or influence; to continue, as time; to lengthen; to prolong; as, to extend the time of payment or a season of trail.
  • (v. t.) To hold out or reach forth, as the arm or hand.
  • (v. t.) To bestow; to offer; to impart; to apply; as, to extend sympathy to the suffering.
  • (v. t.) To increase in quantity by weakening or adulterating additions; as, to extend liquors.
  • (v. t.) To value, as lands taken by a writ of extent in satisfaction of a debt; to assign by writ of extent.

Example Sentences:

  • (1) Therefore, these findings may extend the use of platelets as neuronal models.
  • (2) These cells contained organelles characteristic of the maturation stage ameloblast and often extended to the enamel surface, suggesting a possible origin from the ameloblast layer.
  • (3) Limited biopsic retroperitoneal lymphnode dissection subsequently extended following the result of the frozen section histology.
  • (4) Asthma is probably the commonest chronic disease in the United Kingdom, and its attendant morbidity extends outside the possible scope of the hospital sector.
  • (5) Doppler sample volume was extended to about 1.2 X 1.6 X 4.0 mm.
  • (6) Delta roc, which extends from base pairs 41883 to 43825, overlaps the nin5 deletion, which extend from base pairs 40501 to 43306.
  • (7) TNBS reacts to an extremely small extend with hemoglobin over the concentration range 0.4 to 4 mM whereas FDNB reacts with hemoglobin to a very large extent (50 fold more than TNBS).
  • (8) Four cDNAs extending into the 5'-noncoding region of the human von Willebrand factor cDNA have been characterized.
  • (9) This article, a review of factors controlling vasopressin (AVP) release in pregnancy, extends our contribution to a symposium in this journal published in 1987 (vol X, pp 270-275).
  • (10) The molecule may already in its native form have an extended conformation containing either free sulfhydryl groups or small S-S loops not affecting mobility in SDS-PAGE.
  • (11) Analysis of 156 records relating to patients at the age of 15 to 85 years with extended purulent peritonitis of the surgical and gynecological genesis (the toxic phase, VI category ASA) showed that combination of programmed sanitation laparotomy and intensive antibacterial therapy performed as short-term courses before, during and after the operation with an account of the information on the nature of the microbial associations and antibioticograms was an efficient procedure in treatment of severe peritonitis.
  • (12) The IL-8 isolated from each of these cell types is a mixture of two IL-8 polypeptides, one consisting of 72 amino acids (herein called [ser-IL-8]72) and the other 77 amino acids (an N-terminal extended form herein called [ala-IL-8]77).
  • (13) The follow-up period extended over 8 years to June 1978.
  • (14) Follow-up for half of the cases operated extended up to 2 years, the longest being up to 5 years, showed that 96% of the patients were satisfied.
  • (15) Lateral upper and lower lid lysis allows the needed extended period of healing.
  • (16) But still we have to fight for health benefits, we have to jump through loops … Why doesn’t the NFL offer free healthcare for life, especially for those suffering from brain injury?” The commissioner, however, was quick to remind Davis that benefits are agreed as part of the collective bargaining process held between the league and the players’ union, and said that they had been extended during the most recent round of negotiations.
  • (17) The third patient was using an extended-wear soft contact lens for correction of residual myopia.
  • (18) The horizontal portion of the intracavernous ICA as well as the whole aspect of the aneurysm could be exposed as a result of the extended opening of the cavernous roof anterior to the posterior clinoid process.
  • (19) After an introductory note on primary preventive intervention of breast cancer during adulthood, the author defends and extends a hypothesis that relates most of the known risk factors for this disease to the development of preneoplastic lesions in the breast.
  • (20) The pineal of certain lizards possesses a finger-like projection that extends toward the parietal eye.

Protrude


Definition:

  • (v. t.) To thrust forward; to drive or force along.
  • (v. t.) To thrust out, as through a narrow orifice or from confinement; to cause to come forth.
  • (v. i.) To shoot out or forth; to be thrust forward; to extend beyond a limit; to project.

Example Sentences:

  • (1) Here we present images of polydeoxyadenylate molecules aligned in parallel, with their bases lying flat on a surface of highly oriented pyrolytic graphite and with their charged phosphodiester backbones protruding upwards.
  • (2) As a basis for the discussion a possible structure for the DNA complex of the phenylated neutral red is considered in which the extra phenyl ring at N-5 of the phenazinium system, protrudes into the large groove of the DNA helix while the tricyclic part of the ligand is inserted between the DNA base-pairs.
  • (3) Since deglycosylation decreases the frictional ratio of thyroxine binding globulin, it is concluded that, although sialic acid and other sugar residues are in contact with the protein surface, the hydrated carbohydrate chains protrude partially into the solvent.
  • (4) There are several known enzymes recognizing the same sequence, although the prototype NarI and isoschizomers NdaI and NunII cleave the substrate to produce 5'-protruding ends, whereas cleavage with isoschizomer BbeI results in 3'-protruding ends.
  • (5) Of 193 patients suffering from peptic ulcer bleeding identified by emergency gastrointestinoscopy, 52 patients were found to have bleeding gastric ulcer (spurt 5, active oozing 9, fresh clot 11, black clot 17, protruding vessel 4, and clear base without stigmata 6); the other 141 had bleeding duodenal ulcer (spurt 5, active oozing 26, fresh clot 43, black clot 23, protruding vessel 15, and clear base without stigmata 31).
  • (6) The most frequently registered defects were: os tympanicum (smaller): 23%, os tympanicum (missing): 23%; missing tail: 7%; protruding tongue (15%); none of these defects were seen in the control fetuses.
  • (7) Light microscopic studies indicate it has an ellipsoidal centre from which catalase-positive filamentous or rod-like processes protrude along its major axis; hence, it is called a phi body.
  • (8) Numerous long irregular microvilli which are protruded from the supporting cells into the mucous film covering the olfactory epithelium contain no axial filaments.
  • (9) Comparison of posterior airway space was evaluated radiographically on patients with sleep apnea in a mandibular reposed position vs. a mandibular protruded position.
  • (10) Moreover, some cells protruded cell processes toward the neighboring cells through the extracellular matrix.
  • (11) In 20, the 'restrictive' tissue simultaneously protruded into the right atrium and ventricle; only in 12 did it extend exclusively into the right ventricle.
  • (12) But a missing nucleotide (responsible for one unpaired nucleotide protruding at the 3' or 5' end of the complementary strand) does not stop ligation of the shorter oligodeoxynucleotides between independent duplexes.
  • (13) Astrocyte endfeet of the GLM became irregular in contour, protruding in a fern-leaf fashion into the pial connective tissue.
  • (14) This strand forms a protruding 3' over-hang at the chromosomal terminus in three different eukaryotes analyzed.
  • (15) These included non-union at the trochanteric fracture, protruding pin, partial destruction of the femoral head, subcapital fracture of the femoral neck, and avascular necrosis of the femoral head.
  • (16) The block was produced by a large fragment of bone which had broken off the inferior end plate of the body of L4 and was protruding into the spinal canal.
  • (17) By transmission electron microscopy, discontinuity of the basal lamina (of the marginal glia) was found, and some tumor cells were found to have protruded their processes into the spinal cord parenchyma.
  • (18) An ultrastructural study found not only round, but also elongated and drumstick-shaped alpha-granules and rod-like structures protruding from round alpha-granules.
  • (19) Through combination with a spherical disc face perpendicular to the axis of rotation, which protrudes only slightly from the hemispherical catheter tip, with a maximum at the center and minimum at the lateral borders, the lathing head has only a slight risk of perforation and no undesired sheering forces (Figures 2a to 2d).
  • (20) A novel concentric design of double-barrelled Ca2+-selective microelectrode, with an inner pipette tip that protrudes beyond an outer one, has recently been developed and is described.