(n.) Any right line passing through the center of a figure or body, as a circle, conic section, sphere, cube, etc., and terminated by the opposite boundaries; a straight line which bisects a system of parallel chords drawn in a curve.
(n.) A diametral plane.
(n.) The length of a straight line through the center of an object from side to side; width; thickness; as, the diameter of a tree or rock.
(n.) The distance through the lower part of the shaft of a column, used as a standard measure for all parts of the order. See Module.
Example Sentences:
(1) Electronmicroscopical investigations have revealed that, under normal conditions, a minor vesicular transfer of intravenously injected peroxidase occurs across the endothelium in segments of arterioles, capillaries and venules, especially in arterioles with a diameter about 15-30 mu.
(2) Two kinds of silicafiberscopes with outer diameters 0.80 and 0.45 mm were used in the present study.
(3) A conduit of a diameter of 23 mm was made by hand with a glutaraldehyde preserved xenopericardial graft.
(4) Eighty interposition mesocaval shunts, using a knitted Dacron large diameter prosthesis, have been performed during the past five and one-half years.
(5) An experimental model was established in the ewe allowing one to predict with accuracy an antral follicle that coincidentally would either undergo ovulation (6-8 mm diameter) or atresia (3-4 mm diameter) following synchronization of luteal regression and the onset of the gonadotropin surge.
(6) F pili could be seen on cells of the latter strain but not on those of the parental strain or the strain bearing pColVF54 luminal diameter r. Pili other than F pili were not seen on cells of the strains bearing pF54 in either form.
(7) In the medium-size intermediate fibers, the number and diameter of the mitochondrial columns are intermediate between those of the red and white fibers.
(8) 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.
(9) The inner diameters increased with age in the same way in both obese and control persons, indicating the the former are not protected against osteoporosis in the form of endosteal resorption.
(10) Our results show that stenosis of about one-third of the original external diameter of the artery and vein of the pedicle in our model did not have any significant influence on the survival of the flap and ligation of the femoral artery distal to the branch to the flap did not produce any statistical difference in the viability of the flap.
(11) However, when it has attained a length of about half the cell body diameter, it becomes SUP GLU+ and 6-11B-1+.
(12) In experiments using double and triple chamber cultures it was demonstrated that suppressive macrophages from advanced T8-Guérin tumor (diameter 5--6.5 cm) bearing rats produced a dialysable factor which suppressed the killer activity of lymphocytes from non-advanced T8-Guérin tumor (diameter 0.5--0.7 cm) bearing rats, as well as from nonadvanced h 18R tumor bearing rats and from Ehrlich ascites bearing mice, against T8-Guérin ascitic cells and, respectively, against h 18R ascitic and Ehrlich ascitic cells.
(13) Minimal breast cancer should include lobular carcinoma in situ (lobular neoplasia) and ductal carcinoma in situ regardless of nodal status, and (tentatively) invasive carcinoma smaller than 1 cm in total diameter, if axillary lymph nodes are not involved.
(14) The internal carotid diameters increased 20% to 30% for both the vein and synthetic patched arteries.
(15) Axonal regeneration with the ANG was equal to SAGs as measured by axonal diameters, physiological, and functional methods, although the SAG demonstrated statistically higher axonal counts.
(16) Light microscopic analyses revealed an age-dependent decrease in axon diameter.
(17) Striking features were non-atherosclerotic stenosis with negative Sudan III, seen in the ICA less than 200 mu in diameter of almost all the hearts of stages II and III rabbits.
(18) Blood flow was measured from gastric serosal vessels (average diameter, 1.6 mm) severed immediately after, 24 hours after, and 48 hours after ethanol injection.
(19) Viral particles in the cultures and the brain were of various sizes and shapes; particles ranged from 70 to over 160 nm in diameter, with a variable position of dense nucleoids and less dense core shells.
(20) Electromagnetic flow probes with an inner diameter of 2, 1.5 and 1 nm were used for studies on zero-line drifting and for calibration procedures in a series of rats and rabbits.
Semidiameter
Definition:
(n.) Half of a diameter; a right line, or the length of a right line, drawn from the center of a circle, a sphere, or other curved figure, to its circumference or periphery; a radius.