Mindblown: a blog about philosophy.
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Orientation
Relative position, place. Awareness of one’s self in relation to time, place, and person. The person’s ability to comprehend the environment with reference to time, place, and person. Person’s awareness of self with regard to position, time, place, and personal relationships. Awareness of oneself in time, space, and place. Orientation may be disturbed in such…
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Organism
Individual living system (e.g. a single plant). Any living thing capable of performing all of life processes. Any single plant, animal, bacterium, fungus or other living thing. Individual animal, plant, microorganism, or cell capable of carrying on life functions. Any living thing, which may consist of a single cell or a group of differentiated but…
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Organelle
A small organ within the cell (e.g. a chloroplast). A subcellular structure that performs a specialized function in the cell. Specific particles of membrane-bound organized living substances present in eukaryotic cells, such as the mitochondria; the golgi apparatus; endoplasmic reticulum; lysomomes; plastids; and vacuoles. Membrane-surrounded structures found in eucaryotic cells; they contain enzymes and other…
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Organ
Any definite part of a plant structure (e.g. a cell, a leaf). Any member of a plant—as a petal, stamen, leaf, branch, etc. A part of the body consisting of two or more tissues organized to perform a specific function. A part of the body which is distinct from other parts and has a particular…
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Order
(In nomenclature) a taxon below class and above family. A higher taxonomic rank composed of one to several families. In the classification of living things, a category above the family and below the class. In law, a formal, written directive from a judge, administrative officer, or other judicial officer, as in a case involving child…
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Orbicular
(2-dimensional) flat with a circular outline; (More correctly) (3-dimensional) globose, in the shape of a sphere. Circular or nearly so. Circular in outline. Round in shape. This term is used to describe round muscles, like the eye’s orbicular muscle (orbicularis oculi) and the mouth’s orbicular muscles (orbicularis oris).
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Optimal
The most advantageous condition(s) for an organism or function.
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Oppositisepalous
Placed before a sepal.
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Oppositipetalous
Placed before a petal.
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Opposite
(Of leaves and branches) when two are borne on the same node but on diametrically opposed sides of the stem; (Of other organs) when placed, for example, in front of the petals instead of alternating with them. Situated directly across from each other at the same node or level, as in the leaves or leaflets…
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