median particle diameter

median particle diameter

[′mē·dē·ən ′pärd·ə·kəl dī‚am·əd·ər]
(geology)
The middlemost particle diameter of a rock or sediment, larger than 50% of the diameter in the distribution and smaller than the other 50%.
References in periodicals archive ?
The median particle diameter of the fuel entering the lower row burners increased by 2.
When reducing the boiler load to the minimum (50% of rated load, 160 t/h), an increase in the median particle diameter [[DELTA].
Only a few inhaled corticosteroid (ICS) products have the requisite median particle diameter (less than 2 mcm) needed to reach the alveolar tissue in the distal tracheobronchial tree, including beclomethasone dipropionate HFA (QVAR), flunisolide HFA (Aerospan), and ciclesonide (Sepracor).
Without compatibilizers, the nylon had a median particle diameter of 1400 nm, mean particle diameter of 1360 nm, and a standard deviation of 470 nm.
Without compatibilizers, the polystyrene had a median particle diameter of 440 nm, mean diameter of 540 nm, and a standard deviation of 390 nm.