Survival Dictionary

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
There are 52 names in this directory beginning with the letter O.
Oar
An oar is used to propel a boat through water. As opposed to a paddle, an oar is attached to a boat via rowlocks.

Oasis
A fertile place in the desert where there is water and some vegetation.

OB
Morse Code abbreviation meaning “Old boy”

OBE
Overcome By Events.

Oblique Fracture
When the bone is broken in a diagonal fashion, it is called an oblique fracture.

OC
Morse Code abbreviation meaning “Old chap”

OCHA
Office for the Coordination of Humanitarian Affairs.

OFDA
Office of US Foreign Disaster Assistance.

Off-grid Living
Living self-sufficiently without dependence on infrastructure like grid electricity, municipal water, public sewerage. The object is to not use or pay any money for public utilities.

Offal
The edible internal organs of an animal.

Offshore Powerboat Racing
is a type of racing by ocean-going powerboats, typically point-to-point racing.

OK
Morse Code abbreviation meaning “Okay”

Old Salt
Slang for an experienced mariner.

Olla
Ceramic jar used for cooking stews or soups, storage of water or dry foods, etc.

OM
Morse Code abbreviation meaning “Old man”

Omertà
A code of honor that places importance on silence, non-cooperation with authorities and non-interference in the illegal actions of others. Retaliation against informers is common in criminal circles, where informers are known as rats or snitches.

Omnivore
Animals that eat parts of fruit-bearing plants, but generally only the fruits and vegetables.

On The Double
As quickly as possible; without delay.

One Cheek Lean
To lean on a shovel to support one’s weight while defecating.

One Trip Bug Out
In the event of a major disaster, you may have the opportunity to make one trip to your retreat location before roads become impassible due to road blocks, road closures, or traffic jams.

OO
Morse Code abbreviation meaning “Official observer”

OP
Morse Code abbreviation meaning “Operator”

Open Wound
An exposed injury due to broken skin and at high risk for infection.

Optimism Bias
A cognitive bias that causes a person to believe that they are at a lesser risk of experiencing a negative event compared to others. It is quite common and transcends gender, race, nationality and age. Factors that cause a person to be optimistically biased are their desired end state, their cognitive mechanisms, the information they have about themselves versus others, and overall mood. Although the optimism bias occurs for both positive and negative events, it is stronger for negative events.

Ordinal Points
Or intercardinal points are Northeast, Southeast, Southwest and Northwest.

Orienteering
Using a map and compass to determine route and direction of travel. It is a competitive sport.

Orienteering Compass
As opposed to a lensatic compass, it is used in map reading. It comprises the compass rose, needle and a transparent base plate to align the compass with the map coordinates.

Oscar-Mike
On the Move, from the phonetic alphabet.

OT
Morse Code abbreviation meaning “Old timer”

OTASS
OTA Survival School. The first civilian survival and self-reliance training organisation in India

Ounce (Fluid)
A unit of volume equal to about 28ml in the imperial system or about 30ml in the US system.

Ounce (International Averdupois)
Exactly 28.349523125gm under the international yard and pound agreement of 1959, signed by the United States and countries of the Commonwealth of Nations. 16 ounces make an avoirdupois pound, which equals 7000 grains. One avoirdupois ounce is therefore equal to 437.5 grains. It is still a standard unit in United States.

Ounce (International Troy)
A troy ounce equal 480 grains or 31.1034768gm. There are 12 troy ounces in the troy pound. Today, the troy ounce is used only to express the mass of precious metals.

Ounce (Metric)
A metric ounce is 25gm and 20 ounces make the metric pound of 500gm.

Out
A proword in radio communications signifying the end of the sender’s transmission and no answer is required or expected.

Outback
The vast and remote interior of the Australian continent. It is becoming a generic term referring to any place that is remote.

Outhouse
A small structure separate from a main building that has one or more toilets. This is typically a dry toilet like a pit latrine or a bucket toilet.

Over
A proword in radio communications signifying the end of the sender’s transmission and a response is necessary from the recipient. Contrary to popular belief, “OVER” and “OUT” are never used at the same time.

Overcast Sky
When more than 90% of the sky is covered by clouds.

Overconfidence Effect
A bias in which a person’s subjective confidence in his or her judgements is reliably greater than the objective accuracy of those judgements, especially when confidence is relatively high. It is an example of a miscalibration of subjective probabilities. It has been defined in three distinct ways: (1) overestimation of one’s actual performance; (2) overplacement of one’s performance relative to others; and (3) overprecision in expressing unwarranted certainty in the accuracy of one’s beliefs.

Overestimation
Tendency to overestimate one’s judgment or performance. It focuses on the certainty one feels in their own ability, performance, level of control, or chance of success. This phenomenon is most likely to occur on hard tasks when failure is likely or when the individual making the estimate is not especially skilled. Overestimation has been seen to occur across domains other than those pertaining to one’s own performance.

Overhand Loop
When a length of cordage takes a turn and crosses over itself from above.

Overmorrow
Day after tomorrow.

Overplacement
A judgment of performance compared to others, occuring when people believe themselves to be better than others, or better-than-average.It is the act of placing yourself or rating yourself superior to others. Occurs more on simple tasks, ones we believe are easy to accomplish successfully.

Overprecision
The excessive confidence that one knows the truth.

Ox-Eye
A cloud or other weather phenomenon that may be indicative of an upcoming storm.

Oxbow
Large isolated backwaters.

Oxbow Lake
A stagnant lake formed alongside a river when it changes path leaving an abandoned area cut off from the rest of the river.

Oxidiser
Type of chemical which a fuel requires to burn. Most types of burning uses oxygen as oxidiser.

Oximeter
An instrument to monitor the oxygen saturation in the blood without any invasive procedure.

Oxygen Toxicity
Condition resulting from the harmful effects of breathing molecular oxygen at increased partial pressures, resulting in hyperoxia or excess oxygen in the tissues. Severe cases can result in cell damage and death. It is a concern for underwater divers, those on high concentrations of supplemental oxygen, and those undergoing hyperbaric oxygen therapy.

Ozone Layer
The lower portion of the stratosphere in the Earth’s atmosphere that acts as a shield, guarding against harmful ultraviolet rays from the Sun reaching the ground.


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  1. wilderness survival kit canada

    The term “survival kit” may also refer to the larger, transportable survival kits ready by survivalists , known as “bug-out bags” (BOBs), “Individual Emergency Relocation Kits” (PERKs) or “get out of Dodge” (Good) kits, which are packed into backpacks, or even duffel bags. These kits are developed especially to be more simply carried by the person in case alternate forms of transportation are unavailable or impossible to use.

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