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 ?
Esta concepción ha promovido la expansión de la privatización de los servicios educativos como alternativa para asegurar la calidad.
La expansión de la actividad forestal en el peso de la actividad exportadora se refleja en el comportamiento que tuvo en la década pasada, incrementándose la participación del 48% respecto al 62,7% de la actualidad.