What's the difference between dull and undull?

Dull


Definition:

  • (superl.) Slow of understanding; wanting readiness of apprehension; stupid; doltish; blockish.
  • (superl.) Slow in action; sluggish; unready; awkward.
  • (superl.) Insensible; unfeeling.
  • (superl.) Not keen in edge or point; lacking sharpness; blunt.
  • (superl.) Not bright or clear to the eye; wanting in liveliness of color or luster; not vivid; obscure; dim; as, a dull fire or lamp; a dull red or yellow; a dull mirror.
  • (superl.) Heavy; gross; cloggy; insensible; spiritless; lifeless; inert.
  • (superl.) Furnishing little delight, spirit, or variety; uninteresting; tedious; cheerless; gloomy; melancholy; depressing; as, a dull story or sermon; a dull occupation or period; hence, cloudy; overcast; as, a dull day.
  • (v. t.) To deprive of sharpness of edge or point.
  • (v. t.) To make dull, stupid, or sluggish; to stupefy, as the senses, the feelings, the perceptions, and the like.
  • (v. t.) To render dim or obscure; to sully; to tarnish.
  • (v. t.) To deprive of liveliness or activity; to render heavy; to make inert; to depress; to weary; to sadden.
  • (v. i.) To become dull or stupid.

Example Sentences:

  • (1) "Maybe dullness is associated with psychic pain," Wallace wrote at one point, "because something that's dull or opaque fails to provide enough stimulation to distract people from some other, deeper type of pain that is always there, if only in an ambient low-level way, and which most of us spend nearly all our time and energy trying to distract ourselves from."
  • (2) Similar systems were put in place at Dulles outside Washington DC, Newark and Chicago airports on Thursday.
  • (3) The soft, dull, malacic appearance of the center results from lack of a true surface layer of tangential collagen fibers.
  • (4) Here I am in Los Angeles being paid $30,000 to do next to nothing and still I'm finding life rather dull.
  • (5) A significant proportion of splenic B cells reacted with these mAb, although lower number (one-log less) than peritoneal B cells and a small proportion of H7dull+ splenic B cells seems to be Ly-1(CD5)dull+, 1 of 200 splenic B cells responded to IL-5 for IgM production.
  • (6) A 58-year-old man complained of dull left lower quadrant pain and constipation.
  • (7) They will begin next week at Liberty airport in Newark, New Jersey; Dulles, outside Washington DC; Chicago O’Hare, and Hartsfield-Jackson in Atlanta.
  • (8) At both observations, crowns were rated on 5-point Likert scales for outline form, porosity, smoothness, reflectance, texture, dullness, defects, and general esthetic appearances.
  • (9) On the other hand AMH2 showed the dull-positive reaction with some monocytes and pleural exudate cells among above-mentioned cells.
  • (10) Britain’s Got Talent review – Simon Cowell is looking like Caligula after a dull day at the Coliseum Read more The show, won last year by boy band Collabro, began eight years ago with 4.9 million viewers, rising to 8.8 million for its second series launch before hitting the 10 million mark for the first time in 2009 with 10.3 million.
  • (11) Disseminated annular psoriasiform lesions developed over a period of 2 months in a 48-year-old man with no preceding psoriatic history of drug intake, being accompanied by general dullness and arthralgia.
  • (12) 3) At the severe stage, pain and dullness at the back, numbness at arms and hands, hand coldness, sleep disturbance etc.
  • (13) One month after surgery, she complained of swelling and a dull pain in the right leg without cardiorespiratory symptoms.
  • (14) Black-hair follicular dysplasia in dogs of mixed breeding was delineated by hypotrichosis and dullness of most black regions of the coat.
  • (15) Endoscopic examination disclosed an almost roundish, smooth-surfaced, flat and dull red area corresponding to IIc (slightly depressed type).
  • (16) Their surface phenotype was Thy-1+(dull), Ly-1.2+(dull), Lyt-2-, L3T4-, 9F3+, and 3A1+, which is consistent with that found in intact lpr mice.
  • (17) The engines, gearboxes and even the doors now have a complexity that sees them constructed elsewhere, but the transformation on this line of the dull sheen of aluminium parts into a moving vehicle at the other end is still something to behold.
  • (18) Flow cytometry showed three types of trophozoite staining by mAb: (i) bright staining of greater than 90% of trophozoites, with aggregation of the organisms; (ii) bright staining of approximately 90% of trophozoites, with little or no aggregation; (iii) dull staining of approximately 20% of trophozoites, without aggregation.
  • (19) The percentage of dull CD8+CD11b+ cells (natural killer cells) among TG-2 cells was lower than that in peripheral blood, but there was no significant difference in bright CD8+CD11b+ cells (suppressor-effector T cells) between thyroid glands and peripheral blood.
  • (20) It was filed in my mind as a pretty but dull destination, full of pensioners on package deals and cruises.

Undull


Definition:

  • (v. t.) To remove the dullness of; to clear.

Example Sentences:

  • (1) Three mechanisms play an important role: true elongation of the length of the nerve in the relaxed state against elastic forces; movement of the nerve trunk in the longitudinal direction; and increase and decrease of the tissue relaxation at the level of the nerve trunk (relaxed course) and the nerve fibers (change in the undulated course).
  • (2) In irregular undulation 89.1% of the time corresponded to Stage 2.
  • (3) These two forms could easily be differentiated by examination of the undulating membrane and kinetoplast.
  • (4) The findings were confirmed by a histopathological analysis showing the development of coagulative necrosis and myocytolysis as well as undulations of heart muscle cells as a sign of cardiogenic shock.
  • (5) Paroxysmal headache of the migraine type as well as permanent undulating headache (which we call cephalea) can lead to chronification, both often mixes within the chronification.
  • (6) After treatment with the contraction medium of Hoffmann-Berling, the filaments appear to be undulated.
  • (7) An undulating lightweight roof is supported by 211 narrow steel columns, sheltering a glass box holding the cafe and shop, and a chestnut timber-covered box holding the displays.
  • (8) The original concept of the blood pump is represented by an asymmetrical type of pump with an asymmetrical diaphragm and undulating motion of the diaphragm allowing optimal washing of the blood chamber.
  • (9) When blastomers cease cleaving, their surfaces undulate and form blebs.
  • (10) Foremost among these is a modification of the cell wall from an undulating structure to one which is smooth and has become enlarged.
  • (11) The distal fibular physis also begins as a transverse structure that becomes undulated and has extensive peripheral lappet formation.
  • (12) Undulations in the levels of all responses were noted; the "weaker" the antigen the larger the undulations.
  • (13) Tendon fibers lose their typical undulating appearance and become quite straight.
  • (14) On the rehabilitation ward of a tertiary care hospital, the patient developed undulating fever to 39.6C, rapidly worsening peripheral vascular disease, and pulmonary emboli.
  • (15) All human sera, from patients with tuberculosis as well as from control subjects, gave almost identical undulating patterns of reactivity with the decapeptides.
  • (16) For instance, platelets probably contract, possess a microfilament network, and behave like undulating membrane organelles.
  • (17) The incidence of the 60-69 year old males dropped in a range of 10%; that of the females with the same age had an undulating course with rising trend.
  • (18) The characteristic features of laparoscopic appearance--gentle undulation--were observed in 11 out of 13 (85%) patients with PBC.
  • (19) Tortuous undulating agranular endoplasmic reticulum (ER) was usually closely associated with microperoxisomes.
  • (20) Conversely, nerve shortening enhanced the undulation.

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