chemical (redirected from chemical environment)

chemical /chem·i·cal/ (kem´ĭ-k'l)

1. pertaining to chemistry.

2. a substance composed of chemical elements, or obtained by chemical processes.

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chem·i·cal (km-kl)

adj. Abbr. chem.

1. Of or relating to chemistry.

2. Of or relating to the properties or actions of chemicals.

n.

1. A substance with a distinct molecular composition that is produced by or used in a chemical process.

2. A drug, especially an illicit or addictive one.

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chemi·cal·ly adv.

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chemical

[kem′əkəl]

Etymology: Gk, chemeia, alchemy

1  n, a substance composed of chemical elements or a substance produced by or used in chemical processes.

2  adj, pertaining to chemistry.

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chemical

1. pertaining to chemistry.

2. a substance composed of chemical elements, or obtained by chemical processes. See also toxin.

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chemical adjuvant

a chemical added to another to improve its activity. For example, mineral gels added to vaccines. May also be a chemical added to feed to improve digestion, e.g. monensin in ruminants. These are more commonly referred to as additives. See also adjuvant.

agricultural chemical

chemical used in agriculture. Includes pesticides, anthelmintics, fertilizers, algaecides, herbicides, soil fumigants and the like.

chemical environment

that part of the animals' environment that is composed of chemicals. For farm livestock this includes fertilizers, defoliants, worm drenches, insect sprays, adjuvants to feed. For companion animals see household chemical (below).

household chemical

the roster of chemicals that one can expect to find in the average household. Includes insect sprays and repellents, snail bait, rodenticide, garden sprays, human medicines and the like.

chemical pneumonitis

results from aspiration of gastric acids.

chemical senses

see olfaction (2), taste.

chemical shearing

causing the fleece of sheep to be shed by the administration of a chemical substance to the sheep. Cyclophosphamide and mimosine have been used experimentally but there is no commercially available system.

chemical spoilage

occurs in preserved foods, especially canned ones. Is usually the result of interaction between the contents and an imperfect container. There may be gas produced, e.g. hydrogen swells, or discoloration of the tin.

chemical warfare

agents used include: (1) systemic poisons, e.g. hydrocyanic acid; (2) lung irritants, e.g. chlorine, phosgene; (3) lacrimators (weeping stimulators), e.g. CN, CAP, CS; (4) sternutators (sneeze stimulators); (5) vesicants, e.g. mustards, nitrogen mustards, arsenic mustards and nettle gases; (6) nerve gases, e.g. organophosphorus compounds.

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Patient discussion about chemical environment.

Q. How do you know when depression is chemical or situational? I've been feeling frustrated lately and while I think I show some signs of depression I think it is more a feeling down because of recent changes in my life. Every time I have seen a professional they all want to start me on some drug and having really seen no improvement over the years I swore off them years ago. When is it depression or "My life sucks right now"?

A. Has depression been a pervasive theme in your life? Have you been down
more often than not? Or has it only been during the recent changes you mentioned? And have you seen a 'talk' therapist, or only a doctor? If you are reluctant to take medications you might want to see a therapist first to see if that will help you deal with your depressive mood. The therapist should also be able to advise you whether you should seek medical treatment or not. Good luck!

Q. How do you tell the difference between chemical burns, and burns from fire? Please don't spare on gross words i would like to know everything there is to burns.

A. Here is a ton of info on both-
http://en.wikipedia.org/wiki/Chemical_burn
http://en.wikipedia.org/wiki/Burn_%28injury%29

Q. Which of these meds are better and without any side effect, chemical medicine or Chinese herbal medicine. Hi, I want to know which of these medicines are better and without any side effect, chemical medicine or Chinese herbal medicine. Can herbal treat all diseases?

A. Hi rohan this question always get me going;;CHINESE MED ARE USED MORE FOR PREVENTION,and like BRANDON said most drugs are made from plants?and ther is NO such thing as a med without side effects.natural is not always true,and herbal refers to (plants).If you have a diseace there is no quick cure,most diseases are controlled by meds---dont be fooled by the HYPE--mrfoot56--peace