expansion

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ex·pan·sion

(eks-pan'shŭn),
1. An increase in size as of chest or lungs.
2. The spreading out of any structure (for example, a tendon)).
3. An expanse; a wide area.
[L. ex-pando, pp. -pansus, to spread out]

expansion

/ex·pan·sion/ (ek-span´shun)
1. the process or state of being increased in extent, surface, or bulk.
2. a region or area of increased bulk or surface.

clonal expansion  an immunological response in which lymphocytes stimulated by antigen proliferate and amplify the population of relevant cells.
dorsal digital expansion , extensor expansion extensor aponeurosis; a triangular aponeurotic extension of the digital extensor tendon on the dorsum of the proximal phalanx of each digit, to which the tendons of the lumbrical and interosseous muscles are also attached, forming a movable hood around the metacarpophalangeal joint.

expansion

[ekspan′shən]
Etymology: L, expandere, to spread out
1 the process or state of being increased in extent, surface, or bulk.
2 a region or area of increased bulk or surface.

ex·pan·sion

(eks-pan'shŭn)
1. An increase in size as of chest or lungs.
2. The spreading out of any structure, as a tendon.
3. An expanse; a wide area.
[L. ex-pando, pp. -pansus, to spread out]

ex·pan·sion

(eks-pan'shŭn)
1. An increase in size as of chest or lungs.
2. Spreading out of any structure (e.g., a tendon).
[L. ex-pando, pp. -pansus, to spread out]

expansion,

n an increase in extent, size, volume, or scope.
expansion, delayed (secondary expansion),
n 1. an expansion occurring in amalgam restorations as a result of moisture contamination.
n 2. an expansion exhibited by amalgam that has been contaminated by moisture during trituration or insertion.
expansion, dental arch,
n the therapeutic increase in circumference of the dental arch by buccal or labial movement of the teeth.
expansion, hygroscopic,
n an expansion, caused by absorption of water during setting of an investment, used to compensate for the shrinkage of metal from the molten to the solid state.
expansion, secondary,
n See expansion, delayed.
expansion, setting,
n an expansion that occurs during the setting or hardening of materials such as amalgam and gypsum products.
expansion, thermal,
n an expansion caused by heat. Thermal expansion of the mold is one of the important factors in achieving adequate compensation for the contraction of cast metal when it solidifies.
expansion, thermal coefficient,
n a number indicating the amount of expansion caused by each degree of temperature change. The rate of change in restorative materials and tooth substance should be relatively the same.
References in periodicals archive ?
However, Robin Cotchan of the Association of Postconsumer Plastic Recyclers (APR) is not as pleased with the thought of expanding bottle bills.
However, Commissioners Nick Pacheco, Jackie Dupont-Walker and Romero voiced concern that expanding the City Council to 25 members could result in Latinos and African-Americans having proportionally fewer representatives on the City Council.
More than $5 million will be spent on expanding and renovating the emergency room to meet the growing demand for services from the surrounding neighborhoods.
We are now an expanding group committed to maintaining an independent local identity and representation but combining this with the strength and buying power of a nationwide company.
Expanding Hatch's licensing agreements is in response to customer demand to have Kathy Hatch designs available on expanded product lines.