A peculiar larval form of Phoronis, a genus of marine worms, having a circle of ciliated tentacles.

A group of C/lenterata, comprising the Anthozoa and Ctenophora. The sea anemone, or actinia, is a familiar example.

Of or pertaining to the Actinozoa.

One of the Actinozoa.

A kind of embryo of certain hydroids (Tubularia), having a stellate form.

A process or condition of acting or moving, as opposed to rest; the doing of something; exertion of power or force, as when one body acts on another; the effect of power exerted on one body by another; agency; activity; operation; as, the action of heat; a man of action.

That may be the subject of an action or suit at law; as, to call a man a thief is actionable.

In an actionable manner.

A shareholder in joint-stock company.

Void of action.

naval battle where Antony and Cleopatra were defeated by Octavian's fleet under Agrippa in 31 BC.

To make active.

treated with aeration and bacteria to aid decomposition; -- of sewage

same as activation{1}.

the process of making active. making active and effective (as a bomb).

any agency bringing about activation; (Biol.) a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription.

Having the power or quality of acting; causing change; communicating action or motion; acting; -- opposed to passive, that receives; as, certain active principles; the powers of the mind.

In an active manner; nimbly; briskly; energetically; also, by one's own action; voluntarily, not passively.

The quality of being active; nimbleness; quickness of motion; activity.

a policy of taking direct and militant action to achieve a political or social goal.

one who is aggressively active on behalf of a cause.

advocating a cause or engaged in activism

The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities.

Without action or spirit.

A stuffed jacket worn under the mail, or (later) a jacket plated with mail.

One who acts, or takes part in any affair; a doer.

A female actor or doer.

one of the books of the Christian New Testament describing the activities of Christ's apostles after his death.

Something actually received; real, as distinct from estimated, receipts.

One who deals with or considers actually existing facts and conditions, rather than fancies or theories; a realist; -- opposed to idealist.

The state of being actual; reality; as, the actuality of God's nature.

A making actual or really existent; giving the appearance of reality.

To make actual; to realize in action.

changed from potential to actual; as, saw his worst fears actualized.

Actively.

Quality of being actual; actuality.

Of or pertaining to actuaries; as, the actuarial value of an annuity.

A registrar or clerk; -- used originally in courts of civil law jurisdiction, but in Europe used for a clerk or registrar generally.

Put in action; actuated.

moved to action

causing motion or action or change

A bringing into action; movement.

One who actuates, or puts into action.

Very active.

Abundant activity.

Action.

Tendency or impulse to act.

Sharpened; sharp-pointed.

Act of sharpening.

The act of sharpening.

Sharpness or acuteness, as of a needle, wit, etc.

A small spiny outgrowth on the wings of certain insects.

Having a sting; covered with prickles; sharp like a prickle.

Having a sharp point; armed with prickles; prickly; aculeate.

Like a prickle.

Having small prickles or sharp points.

Aculeate.

A prickle growing on the bark, as in some brambles and roses.

Quickness of perception or discernment; penetration of mind; the faculty of nice discrimination.

To end in, or come to, a sharp point.

Terminating in a flat, narrow end.

Characterized by acumen; keen.

A mode of arresting hemorrhage resulting from wounds or surgical operations, by passing under the divided vessel a needle, the ends of which are left exposed externally on the cutaneous surface.

See Acupuncture.

To treat with acupuncture.

See Accustomance.

Acute-angled.

To give an acute sound to; as, he acutes his rising inflection too much.

Having acute angles; as, an acute-angled triangle, a triangle with every one of its angles less than a right angle.

In an acute manner; sharply; keenly; with nice discrimination.

The quality of being acute or pointed; sharpness; as, the acuteness of an angle.

Having sharp-pointed leaves.

Having acute lobes, as some leaves.

The twisting of an artery with a needle to arrest hemorrhage.

Not cyclic; not disposed in cycles or whorls Of a flower, having its parts inserted spirally on the receptacle. Having an open-chain structure; aliphatic.

An acid radical, as acetyl, malonyl, or benzoyl. An acyl radical can be depicted as R-CO-, where -CO- is the carbonyl group, and R is the group that characterizes the acyl moiety.

To compel; to drive.

Without fingers or without toes. Without claws on the feet (of crustaceous animals).

the Babylonian god of storms and wind.

An old saying, which has obtained credit by long use; a proverb.

Pertaining to an adage; proverbial.

A piece of music in adagio time; a slow movement; as, an adagio of Haydn.

The name given in the Bible to the first man, the progenitor of the human race.

North American orchid (Aplectrum hyemale) bearing a single leaf and yellowish-brown flowers.

same as adamancy.

obstinacy.

A stone imagined by some to be of impenetrable hardness; a name given to the diamond and other substances of extreme hardness; but in modern mineralogy it has no technical signification. It is now a rhetorical or poetical name for the embodiment of impenetrable hardness.

Of adamant; hard as adamant.

Made of adamant, or having the qualities of adamant; incapable of being broken, dissolved, or penetrated; as, adamantine bonds or chains.

Next to the ambulacra; as, the adambulacral ossicles of the starfish.

Of or pertaining to Adam, or resembling him.

A descendant of Adam; a human being.

Dancing.

Dangling.

A genus of great trees related to the Bombax. There are two species, Adansonia digitata, the baobab or monkey-bread of Africa and India, and Adansonia Gregorii, the sour gourd or cream-of-tartar tree of Australia. Both have a trunk of moderate height, but of enormous diameter, and a wide-spreading head. The fruit is oblong, and filled with pleasantly acid pulp. The wood is very soft, and the bark is used by the natives for making ropes and cloth.

a demigod or first man: "seed of mankind"; sometimes identified with Adam.

extinct small mostly diurnal lower primates that fed on leaves and fruit; abundant in North America and Europe 30 to 50 million years ago; their descendents probably include the lemurs and lorises; some authorities consider them ancestral to anthropoids but others consider them only cousins.

To make suitable; to fit, or suit; to adjust; to alter so as to fit for a new use; -- sometimes followed by to or for.

Capable of being adapted.

The quality of being adaptable; suitableness.

The act or process of adapting, or fitting; or the state of being adapted or fitted; fitness.

having a capacity for adaptation. Opposed to maladaptive.

Adaptive.

The state or quality of being adapted; suitableness; special fitness.

One who adapts.

Adaptation.

Suited, given, or tending, to adaptation; characterized by adaptation; capable of adapting.

an optical system used in some telescopes since the 1980's which rapidly changes the shape of the primary reflecting mirror to adjust for distortions of light which are caused by atmospheric turbulence. By reducing the distortions caused by the atmosphere, telescopes fitted with such optics can achieve a higher resolving power than normal telescopes with static mirrors.

the evolutionary generation of multiple specialized life forms from one ancestral form, evidenced in the fossil record. The inverse of extinction.

The quality of being adaptive; capacity to adapt.

In a suitable manner.

Adaptedness.

Adaptive.

The twelfth month of the Hebrew ecclesiastical year, and the sixth of the civil. It corresponded nearly with March.

A saltish concretion on reeds and grass in marshy grounds in Galatia. It is soft and porous, and was formerly used for cleansing the skin from freckles and tetters, and also in leprosy.

A fine cotton cloth of India.

To daunt; to subdue; to mitigate.

To awaken; to arouse.

By day, or every day; in the daytime.

To make an addition. To add to, to augment; to increase; as, it adds to our anxiety.