(informal) A 1993 controversy around allegations that Bill Clinton's haircut aboard Air Force One delayed air traffic.

Lacking a pearl or pearls. / (Of an oyster) without a pearl; not producing pearls.

(pharmacology) Used to form names of hepatitis C virus NS5A inhibitors used as antivirals.

(colloquial) The various sugars ending in -ose, such as sucrose, lactose, glucose, and fructose.