matter

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Related to a matter of course: come in handy, take account of, so much for

matter

 [mat´er]
1. physical material having form and weight under ordinary conditions; called also substance.
2. pus.
gray matter areas of the nervous system where the nerve fibers are unmyelinated (not enveloped by a myelin sheath); it contains the bodies of the nerve cells. Tissue composed of myelinated fibers is called white matter. The cerebral cortex is entirely composed of gray matter and the cerebellum also contains some deep-seated masses of it. The spinal cord has a central core of gray matter surrounded by white matter; in cross section, its gray matter is shaped approximately like the letter H. Called also substantia grisea and gray substance.
white matter areas of the nervous system composed mostly of myelinated nerve fibers (those having myelin sheaths) constituting the conducting portion of the brain and spinal cord. Tissue composed of unmyelinated fibers is called gray matter. Called also substantia alba and white substance.

sub·stance

(sŭb'stănts),
Material.
Synonym(s): substantia [TA], matter
[L. substantia, essence, material, fr. sub- sto, to stand under, be present]

matter

/mat·ter/ (mat´er)
1. substance; anything that occupies space.
2. pus.

gray matter  substantia grisea.
white matter  substantia alba.

matter

(măt′ər)
n.
1. A specific type of substance.
2. Discharge or waste, such as pus or feces, from a living organism.

matter

Etymology: L, materia
1 anything that has mass and occupies space.
2 any substance not otherwise identified as to its constituents, such as gray matter, pus, or serum exuding from a wound.

matter

Anatomy
Material substance that occupies cavities.

Physics
Material substance that occupies space.

matter

Anatomy Stuff that occupies cavities. See Gray matter, White matter.

sub·stance

(sŭb'stăns)
Material.
Synonym(s): substantia [TA] , matter.
[L. substantia, essence, material, fr. sub-sto, to stand under, be present]

matter

that which constitutes the substance of physical forms, has mass, occupies space and can be quantified.

matter

1. physical material having form and weight under ordinary conditions of gravity.
2. pus.

gray matter
matter of the central nervous system, which represents the aggregations of the nerve cells.
white matter
matter of the central nervous system, which comprises the axons of the nerve cells.
References in classic literature ?
It was so like the Marchioness to claim, as a matter of course, the best of everything that was going.
At Selkirk, the old team of dogs, fresh and in condition, were harnessed, and the same day saw Daylight plodding on, alternating places at the gee-pole, as a matter of course, with the Le Barge Indian who had volunteered on the way out.
That their appearance was coincidental with the arrival of the Arangi was an association that occurred as a matter of course in Jerry's brain.
The gratitude was addressed to Emily as a matter of course.
The Palace Hotel, appealing for encouragement mainly to English and American travellers, celebrated the opening of its doors, as a matter of course, by the giving of a grand banquet, and the delivery of a long succession of speeches.
We were provided with letters of introduction, as a matter of course.
Some natural struggles, on the part of the little creature, had ended in the overthrow of the basket, and the usual outburst of crying had followed as a matter of course.