ag-, agen-, act-, agi-, agit-

1. An agent that produces coagulation or which converts a fluid or a substance that is in a solution into a solid or gel.
2. An agent that causes, stimulates, or accelerates coagulation, especially with reference to blood.
3. Etymology: from Middle French coaguler, from Ltin coagulatus, past participle of coagulare, "to cause to curdle"; from cogere, "to curdle, to collect"; from com-, "together" + agere "to drive".

1. To convert a fluid or a substance that is in a solution into a solid or gel.
2. To clot; to curdle; to change from a liquid to a solid or gel.
3. Etymology: from Middle French coaguler, from Ltin coagulatus, past participle of coagulare, "to cause to curdle"; from cogere, "to curdle, to collect"; from com-, "together" + agere "to drive".

1. The process of forming semisolid lumps in a liquid.
2. In medicine, the clotting of blood or the process by which the blood clots to form solid masses.

Tissue can also be subjected to coagulation by various means, as by electrocoagulation (coagulation [clotting] of tissue using a high-frequency electrical current applied locally with a metal instrument or needle with the aim of stopping bleeding); laser coagulation (produces light in the visible green wavelength that is selectively absorbed by hemoglobin, the pigment in red blood cells, in order to seal off bleeding blood vessels); or photocoagulation (coagulation [clotting] of tissue using a laser which produces light in the visible green wavelength that is selectively absorbed by hemoglobin, the pigment in red blood cells, in order to seal off bleeding blood vessels).

Disease affecting the coagulability of the blood.

The quality or state of being convincing or persuasive.

1. Appealing to the intellect or powers of reasoning; convincing: "She presented a cogent argument for raising the prices."
2. Etymology: from French cogent, "necessary, urgent" (14 century); from Latin cogentem , from cogere, "to curdle, to compel, to collect"; from com-, "together" + agere, "to drive".

In a cogent manner or reasonable and convincing based on evidence.

1. To think deeply and carefully about something; to ponder.
2. To consider carefully and deeply; to reflect upon; to turn over in one's mind.
3. Etymology: from Latin cogitatus, past participle of cogitare, "to ponder, to weigh, to reflect, to think", from co-, short for com-, "with, together" + agitare, "to put in constant motion, to drive, to impel"; from agere, "to set in motion, to drive, to lead".

1. Thoughtful and attentive consideration and meditation.
2. A serious thought; a carefully considered reflection about something.

Inclined to or capable of cogitation (serious thought).

A reference to, or characteristic of, meditating, contemplating, or being thoughtful.

I think, therefore I am depressed.

Also translated as, "I think, therefore I exist."

Credited to Descartes [French philosopher] as a priori proof of one's existence in his Discourse on Method, and is used as the starting point for his philosophic system.

I think, therefore I am. Thanks be to God.

Motto of Shorter College, North Little Rock, Arkansas, USA.

That which is capable of being corrected, improved, or reformed.