. A sickness felt by aëronauts due to high speed of flights and rapidity in changing altitudes, combining some symptoms of mountain sickness and some of seasickness. The nauseous symptoms similar to seasickness experienced by passengers in pressurized aircraft is called air sickness. [ Webster 1913 Suppl. +PJC ]

. A vomiting or nauseous feeling similar to seasickness experienced by passengers in aircraft; -- it is caused by motion and distinguished from the effects of low air pressure, as it may also occur in the pressurized cabins of large aircraft. [ PJC ]

n. The quality or state of being black; black color; atrociousness or enormity in wickedness. [ 1913 Webster ]

They're darker now than blackness. Donne. [ 1913 Webster ]

n. The state of being blank. [ 1913 Webster ]

n. Liveliness; vigor in action; quickness; gayety; vivacity; effervescence. [ 1913 Webster ]

n. 1. (Naut.) Liability to be overset; -- said of a ship or other vessel. [ 1913 Webster ]

2. Sprightliness; vigor; health. [ 1913 Webster ]

n. 1. The absence of light; blackness; obscurity; gloom. [ 1913 Webster ]

And darkness was upon the face of the deep. Gen. i. 2. [ 1913 Webster ]

2. A state of privacy; secrecy. [ 1913 Webster ]

What I tell you in darkness, that speak ye in light. Matt. x. 27. [ 1913 Webster ]

3. A state of ignorance or error, especially on moral or religious subjects; hence, wickedness; impurity. [ 1913 Webster ]

Men loved darkness rather than light, because their deeds were evil. John. iii. 19. [ 1913 Webster ]

Pursue these sons of darkness: drive them out
From all heaven's bounds. Milton. [ 1913 Webster ]

4. Want of clearness or perspicuity; obscurity; as, the darkness of a subject, or of a discussion. [ 1913 Webster ]

5. A state of distress or trouble. [ 1913 Webster ]

A day of clouds and of thick darkness. Joel. ii. 2. [ 1913 Webster ]

Prince of darkness, the Devil; Satan. “In the power of the Prince of darkness.” Locke.

Syn. -- Darkness, Dimness, Obscurity, Gloom. Darkness arises from a total, and dimness from a partial, want of light. A thing is obscure when so overclouded or covered as not to be easily perceived. As tha shade or obscurity increases, it deepens into gloom. What is dark is hidden from view; what is obscure is difficult to perceive or penetrate; the eye becomes dim with age; an impending storm fills the atmosphere with gloom. When taken figuratively, these words have a like use; as, the darkness of ignorance; dimness of discernment; obscurity of reasoning; gloom of superstition. [ 1913 Webster ]

n. Darkness. [ Obs. ] Chaucer. [ 1913 Webster ]

n. Duskiness. [ R. ] Sir T. Elyot. [ 1913 Webster ]

n. The quality of being frank; candor; openess; ingenuousness; fairness; liberality. [ 1913 Webster ]

n. (Naut.) The the process of deterioration afflicting a ship that is iron-sick. [ PJC ]

n. The state or quality of being lank. [ 1913 Webster ]

n. The state of being love-sick. [ 1913 Webster ]

n. The quality or state of being meek. [ 1913 Webster ]

. (Veter., Med.) A peculiar malignant disease, occurring in parts of the western United States, and affecting certain kinds of farm stock (esp. cows), and persons using the meat or dairy products of infected cattle. Its chief symptoms in man are uncontrollable vomiting, obstinate constipation, pain, and muscular tremors. Its origin in cattle has been variously ascribed to the presence of certain plants in their food, and to polluted water. [ Webster 1913 Suppl. ]

n. Quality or state of being pink. [ 1913 Webster ]

n. 1. The condition or quality of being quick or living; life. [ Obs. ] [ 1913 Webster ]

Touch it with thy celestial quickness. Herbert. [ 1913 Webster ]

2. Activity; briskness; especially, rapidity of motion; speed; celerity; as, quickness of wit. [ 1913 Webster ]

This deed . . . must send thee hence
With fiery quickness. Shak. [ 1913 Webster ]

His mind had, indeed, great quickness and vigor. Macaulay. [ 1913 Webster ]

3. Acuteness of perception; keen sensibility. [ 1913 Webster ]

Would not quickness of sensation be an inconvenience to an animal that must lie still ? Locke [ 1913 Webster ]

4. Sharpness; pungency of taste. Mortimer. [ 1913 Webster ]

Syn. -- Velocity; celerity; rapidity; speed; haste; expedition; promptness; dispatch; swiftness; nimbleness; fleetness; agility; briskness; liveliness; readiness; sagacity; shrewdness; shrewdness; sharpness; keenness. [ 1913 Webster ]

n. [ AS. rancness pride. ] The condition or quality of being rank. [ 1913 Webster ]

n. The peculiar sickness, characterized by nausea and prostration, which is caused by the pitching or rolling of a vessel. [ 1913 Webster ]

n. [ AS. seócness. ] 1. The quality or state of being sick or diseased; illness; sisease or malady. [ 1913 Webster ]

I do lament the sickness of the king. Shak. [ 1913 Webster ]

Trust not too much your now resistless charms;
Those, age or sickness soon or late disarms. Pope. [ 1913 Webster ]

2. Nausea; qualmishness; as, sickness of stomach. [ 1913 Webster ]

Syn. -- Illness; disease; malady. See Illness. [ 1913 Webster ]

n. Silkiness. [ Obs. ] B. Jonson. [ 1913 Webster ]

n. The quality or state of being slack. [ 1913 Webster ]

n. The quality or state of being sleek; smoothness and glossiness of surface. [ 1913 Webster ]

n. The state or quality of being slick; smoothness; sleekness. [ 1913 Webster ]

n. a group of symptoms, prominently nausea, but sometimes including lethargy, headache, and sweating, occuring under the weightless conditions of space flight. [ RHUD ] [ PJC ]

n. The quality or state of being stark. [ 1913 Webster ]

n. [ AS. &unr_;icnes. ] The quality or state of being thick (in any of the senses of the adjective). [ 1913 Webster ]

n. 1. The quality or state of being weak; want of strength or firmness; lack of vigor; want of resolution or of moral strength; feebleness. [ 1913 Webster ]

2. That which is a mark of lack of strength or resolution; a fault; a defect. [ 1913 Webster ]

Many take pleasure in spreading abroad the weakness of an exalted character. Spectator. [ 1913 Webster ]

Syn. -- Feebleness; debility; languor; imbecility; infirmness; infirmity; decrepitude; frailty; faintness. [ 1913 Webster ]