regi-, reg-, rec-, rex-
(Latin: to direct, to rule, to lead straight, to keep straight; to guide, to govern)
Although it does not appear to be correct, all of the words in this unit etymologically come from this family group. Some words; such as, surge and its related formats, may be presented as separate units; however, they originally evolved from this family unit.
2. A mission flown by a combat military aircraft.
3. Armed attacks; especially, those made from a place surrounded by enemy forces.
4. A brief trip away from home; especially, to an unfamiliar place.
5. Etymology: "attack of the besieged upon the besiegers"; from French sortie; literally, "a going out", noun use of the past participle verb form of sortir, "go out", from Old French, "to go out, to escape"; from Latin surgere, "to rise up" which is from "fountain, stream" and from sub, "up from below" + regere, "to keep straight, to guide".
2. To come out from a defensive position to make an attack: "The special forces are currently sortieing terrorist forces in the mountains."
3. A short journey to a place where people have not been before, often with a particular purpose: "It was our first sortie into the new fitness studio to see what the trainers have to offer."
"During our vacation in the national park, we sortied into the various attractive areas that were available there."
2. Etymology: from Latin sortilegus, “prophetic, soothsayer”; from sors, “lot, fortune” plus legere, “to read”.

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2. A strong, swelling, wavelike volume or body of something: "The burning brush produced a billowing surge of smoke."
3. A fast, sudden movement; such as, a surge taking place while driving a car.
4. The swelling and rolling sea: "The surge of the sea crashed against the beach homes."
5. In meteorology, a widespread change in atmospheric pressure that is in addition to cyclonic and normal diurnal changes; such as, a storm surge.
6. With electricity, a sudden rush or burst of current or voltage; a violent oscillatory disturbance.
7. An uneven flow and strong momentum given to a fluid; such as, water in a tank, resulting in a rapid, temporary rise in pressure.
8. A sudden unplanned change in an electrical system's voltage which is capable of damaging electrical equipment; especially, an increase in voltage significantly above the designated level of 120 volts for U.S. household and office wiring or 220 volts in Europe or in other parts of the world.
9. Etymology: from Latin surgere, "to rise"; a contraction of surrigere, "to rise" from sub-, "up from below" + regere, "to keep straight, to guide".
Electrical surges refer to sudden unplanned changes in an electrical system's voltage that is capable of damaging electrical equipment; especially, an increase in voltage significantly above the designated level of 120 volts or 220 volts.
2. The regulation and control of temperature, specifically internal body temperature.
3. The control of heat production and heat loss, specifically the maintenance of body temperature through physiological mechanisms activated by the hypothalamus (a neural control center at the base of the brain, concerned with hunger, thirst, and other autonomic functions).
4. The various physiological processes by which the body regulates its internal temperature.
The process by which an organism regulates its internal body temperature which takes place by means of various physiological processes but can also involve behavior; such as, moving away from a condition of extreme heat or cold.
The two most common forms are ectothermic and endothermic regulation.
Vexilla regis prodeunt,
Fulget crucis mysterium,
Qua vita mortem pertulit
Et morta vitam protulit.
Abroad the royal banners fly
And bear the gleaming Cross on high-
That Cross whereon Life suffered death
And gave us life with dying breath.
Another interpretation: "Life is mostly a matter of luck."