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substitution

   Also found in: Dictionary/thesaurus, Legal, Financial, Encyclopedia, Wikipedia, Hutchinson 0.03 sec.
substitution /sub·sti·tu·tion/ (sub″stĭ-too´shun)
1. the act of putting one thing in place of another, especially the chemical replacement of one atom or radical by another.
2. a defense mechanism, operating unconsciously, in which an unattainable or unacceptable goal, emotion, or object is replaced by one that is attainable or acceptable.

sub·sti·tu·tion (sbst-tshn)
n.
1. The replacement of an atom or group of atoms in a compound by another atom or group of atoms.
2. An unconscious defense mechanism by which the unacceptable or unattainable is replaced by something more acceptable or attainable.

substitution
[-stit(y)o̅o̅′shən]
a mental defense mechanism, operating unconsciously, by which an unattainable or unacceptable goal, emotion, or object is replaced by one that is more attainable or acceptable.

substitution,
n a standard or nonstandard speech sound used for another consonant speech sound (e.g.,
w for
l wady for
lady]).

substitution
the act of putting one thing in the place of another, especially the chemical replacement of one atom or substituent group by another.

conservative substitution
in protein chemistry, one amino acid is substituted by another which has a similar polarity.
meat substitution
a common fraud in the meat industry in which uninspected meat is substituted for meat that has undergone inspection and been branded as satisfactory. The other not infrequent fraud is the substitution of meat of another species, e.g. horse for beef, cat for chicken or rabbit.
non-conservative substitution
in protein chemistry, one amino acid is substituted by another which has a markedly different polarity.

substitution
Psychiatry An unconscious defense mechanism through which an unattainable or unacceptable goal, emotion, or object is replaced by one that is more attainable or acceptable. See Ego defense mechanism.

Patient discussion about substitution.

Q. Any suggestions for coping with asthma in 5 year old? My daughter has asthma. It comes on when she has a cold or an ear or throat infection. I had to give her a liquid steroid last night as she had asthma really badly, the trouble is the steroid makes her so hyper-active, jumping off lounges and running around etc. It drives me crazy because she really needs to rest. I have seen specialists and this is what they all prescribe. What sort of medications do you give your asthmatic child? Are there any new developments I'm not aware of? I would really like some natural remedies if there is any, or diet tips.

A. hi whiteh,i am a retired respiratory therapist,depending on how bad your child is with her attacks will determine what types of meds work for her steroids are given for bad asthma an it might be the only thing that works good for her,her dr knows best.if your child has a regular dr. get a pulmonary specialist for her.----also steroids should NOT BE STOPPED right AWAY if your child has been on high doses this can cause her to have a bad attack.---mrfoot56

Q. Do people substitute one addiction with another? If someone used to be addicted to alcohol and drugs, but is now clean for several months, is it likely that he will develop an addiction to something else (for example cigarettes or gambling)?

A. I'd just like to add my 2 cents worth: Addictive behavior transfers to just about anything; addiction is the problem. Just as addicts have to learn that alcohol is also a drug, we must recognize that addiction is the problem; it is the behavior that is the problem. A common thing for addicts to do is to stop using drugs (including alcohol) and to substitute with people instead, for example, to become involved in codependent relationships with others, or to recognize that their ongoing relationships may also be codependent. It's not uncommon for individuals to go to CoDA (Codependents Anonymous) in addition to AA/NA or GA(Gambler's Anonymous), MA (Marijuana Anonymous)...Others find it more beneficial to use one program (like NA, e.g.), while realizing that addiction refers to more than just a drug or substance.

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