Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
 noun Anatomy A muscle that stretches or tightens a body part.
 noun Mathematics A set of quantities that obey certain transformation laws relating the bases in one generalized coordinate system to those of another and involving partial derivative sums. Vectors are simple tensors.
from The Century Dictionary.
 noun In anatomy, one of several muscles which tighten a part, or make it tense, or put it upon the stretch: differing from an extensor in not changing the relative position or direction of the axis of the part: opposed to laxator.
 noun In mathematics, the modulus of a quaternion; the ratio in which it stretches the length of a vector.
 In anatomy, noting certain muscles whose function is to render fasciæ or other structures tense.
from the GNU version of the Collaborative International Dictionary of English.
 noun (Anat.) A muscle that stretches a part, or renders it tense.
 noun (Geom.) The ratio of one vector to another in length, no regard being had to the direction of the two vectors;  so called because considered as a
stretching factor in changing one vector into another. SeeVersor .
from Wiktionary, Creative Commons Attribution/ShareAlike License.
 noun A muscle that stretches a part, or renders it tense.
 adjective Of or relating to tensors
 verb To compute the tensor product of two tensors.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
 noun any of several muscles that cause an attached structure to become tense or firm
 noun a generalization of the concept of a vector
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples

For those familiar with tensors, it should be clear that the metric tensor is actually a tensor field (a tensor is assigned to each point of our mathematical space).
Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element 2009

For those familiar with tensors, it should be clear that the metric tensor is actually a tensor field (a tensor is assigned to each point of our mathematical space).
Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element 2009

EDIT: A note from The Unapologetic Mathematician that I should add: the metric tensor is a bilinear function of two vectors at a given point, while the line element is a quadratic function of a single vector.
Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element 2009

A metric tensor is a function defined on a manifold (a vector space) that takes in two tangent vectors and produces a scalar quantity.
Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element 2009

As in general relativity the metric tensor is written as gij = ηij + hij …
Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element 2009

A metric tensor is NOT the same object as a metric, it is NOT the same object as its matrix representation, and it is NOT the same object as its associated line element.
Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element 2009

EDIT: A note from The Unapologetic Mathematician that I should add: the metric tensor is a bilinear function of two vectors at a given point, while the line element is a quadratic function of a single vector.
Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element 2009

The matrix representation of a metric tensor is a matrix.
Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element 2009

The covariant form of the metric tensor is expressed in terms of three parameters, m, e, and a by ds2 = ρ2dθ2 – 2a sin2θdrdφ + 2drdu + …
Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element 2009

As in general relativity the metric tensor is written as gij = ηij + hij …
Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element 2009
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