| second molar | Seventh permanent or fifth deciduous tooth in the maxilla and mandible on either side of the midsagittal plane of the head following the arch form. (05 Mar 2000) |
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| second parallel pelvic plane | The plane extending from the middle of the posterior surface of the pubic symphysis to the junction of the second and third sacral vertebrae, and laterally passing through the ischial bones over the middle of the acetabulum. Synonym: second parallel pelvic plane, wide plane. (05 Mar 2000) |
| second set rejection | An accelerated rejection of a transplant that occurs when an individual has been previously sensitised to the graft. (05 Mar 2000) |
| second sight | 1. <ophthalmology> Improved near vision in the aged as a result of increased refractivity of the nucleus of the lens causing myopia. Synonym: senile lenticular myopia. 2. The power of discerning what is not visible to the physical eye, or of foreseeing future events. Such as are of a disastrous kind, the capacity of a seer or prophetic vision. Source: Websters Dictionary (01 Mar 1998) |
| second signaling system | <psychology> Pavlovian term for speech in which words are considered to be the second signals capable of producing conditioned responses. (05 Mar 2000) |
| second sound | The second sound heard on auscultation of the heart; signifies the beginning of diastole and is due to closure of the semilunar valves. Synonym: second sound. (05 Mar 2000) |
| second stage of labour | <obstetrics> The part of labour from the full dilatation of the cervix until the baby is completely out of the birth canal. The second stage of labour is also called the stage of expulsion. (12 Dec 1998) |
| second temporal convolution | A longitudinal gyrus on the lateral surface of the temporal lobe, between the superior and inferior temporal sulci. Synonym: gyrus temporalis medius, middle temporal convolution, second temporal convolution. (05 Mar 2000) |
| second tibial muscle | An inconstant muscle, of small size, arising from the back of the tibia and inserted into the articular capsule of the ankle joint. Synonym: second tibial muscle. (05 Mar 2000) |
| second tooth | One of the 32 teeth belonging to the second or permanent dentition; eruption of the permanent teeth begins from the fifth to the seventh year, and is not completed until the seventeenth to the twenty-third year, when the last of the wisdom teeth appears. Synonym: dens permanens, dens succedaneus, second tooth, secondary dentition, succedaneous dentition, succedaneous tooth. (05 Mar 2000) |
| second-look operation | Exploratory celiotomy within a year after apparently curative resection of intra-abdominal cancer, in patients with no sign or symptom of recurrence, to resect an occult tumour if present. (05 Mar 2000) |
| second-order conditioning | The use of a previously successfully conditioned stimulus as the unconditioned stimulus for further conditioning. (05 Mar 2000) |
| second-order kinetics | A term describing the reaction rate of a chemical reaction in which the rate is proportional to the product of the concentrations (in moles) of two of the reactants (also called bimolecular kinetics), or to the square of the molar concentration of the reactant if there is only one. Such a reaction might have an equation like rate = k[A][B] or rate = k[A]2, where k is the reaction rate constant, [A] is the concentration of reactant A, and [B] is the concentration of reactant B. (09 Oct 1997) |
| second-stability region | <radiobiology> A high pressure region where the plasma becomes stable to the pressure-gradient-driven ballooning instability. The plasma is stable in the limit of small pressure gradients, becomes unstable at some intermediate pressure, and then becomes stable again at still higher pressures. Tokamaks operating in the second-stability region would be more attractive because the higher pressures (beta) would provide more fusion reactivity per unit volume of plasma, allowing smaller reactors to be built. (09 Oct 1997) |
| secondaries | Synonym: metastasis. 2. The lesions of secondary syphilis. (05 Mar 2000) |
| foot-pound-second system | <mechanics> A system of absolute units based on the foot, pound, and second. (05 Mar 2000) |
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| secondary sex characteristic |
the genetically determined sex characteristics that are not functionally necessary for reproduction (pitch of the voice and body hair and musculature)
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| second |
1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites moment: an indefinitely short time; "wait just a moment"; "it only takes a minute"; "in just a bit" second base: the fielding position of the player on a baseball team who is stationed near the second of the bases in the infield moment: a particular point in time; "the moment he arrived the party began" following the first in an ordering or series; "he came in a close second" a 60th part of a minute of arc; "the treasure is 2 minutes and 45 seconds south of here" coming next after the first in position in space or time or degree or magnitude the official attendant of a contestant in a duel or boxing match a speech seconding a motion; "do I hear a second?" coming next after first; "a second chance"; "the second vice president" second gear: the gear that has the second lowest forward gear ratio in the gear box of a motor vehicle; "he had to shift down into second to make the hill" give support or one's approval to; "I'll second that motion"; "I can't back this plan"; "endorse a new project" a part or voice or instrument or orchestra section lower in pitch than or subordinate to the first; "second flute"; "the second violins" in the second place; "second, we must consider the economy" irregular: merchandise that has imperfections; usually sold at a reduced price without the brand name transfer an employee to a different, temporary assignment; "The officer was seconded for duty overseas" having the second highest gear ratio; "second gear"
출처: wordnet.princeton.edu/perl/webwn
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| second-degree burn |
burn causing blisters on the skin and superficial destruction of the dermis
출처: wordnet.princeton.edu/perl/webwn
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| second law of thermodynamics |
a law stating that mechanical work can be derived from a body only when that body interacts with another at a lower temperature; any spontaneous process results in an increase of entropy
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| secondarily |
of secondary import; "secondarily affected"
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| second | coming next after first |
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| second | (music) a part or voice or instrument or orchestra section lower in pitch than or subordinate to the first |
| second | coming next after the first in position in space or time or degree or magnitude |
| second | in the second place |
| second | (Christian theology) the reappearance of Jesus as judge for the Last Judgment |
| second | any Christian religion that believes the second coming of Christ is imminent |
| second | a member of Christian denomination that expects the imminent advent of Christ |
| second | rearmost or uppermost area in the balcony containing the least expensive seats |
| second | the fielding position of the player on a baseball team who is stationed near 2nd base |
| second | the base that must be touched second by a base runner in baseball |
| second | (baseball or softball) the person who plays second base |
| second | battle in World War I (1915) |