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1. pertaining to chemistry.
2. a substance composed of chemical elements, or obtained by chemical processes.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


Relating to chemistry.
Farlex Partner Medical Dictionary © Farlex 2012

Pearl Index

Obstetrics A formula that allows comparison of the efficacy of contraceptive methods, calculated as the pregnancy rate in population divided by 100 yrs of exposure. See Breast feeding, Coitus interruptus, Condoms, Morning-after pill, Contraception, Natural family planning, Norplant, Rhythm method, RU 486.
Pearl index–pregnancies/100 years of use
Physiologic 15-30/100 years: Coitus interruptus, natural family planning (rhythm or safe period), eg calendar method, evaluation of cervical mucosa or temperature, breast feeding
Chemical 15-20/100 years: Contraceptive sponges
Barrier 2-20/100 years: Intrauterine devices, condoms
Hormonal 1-3/100 years
Surgical << 1/100 years: Ligation of fallopian tubes, vas deferens  
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


Relating to chemistry.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Patient discussion about chemical

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. Thank you Johanna for sharing this with us.

Q. ADHD medications work on these brain chemicals? Hope you all know about the different types of brain chemicals, so the ADHD medications work on these brain chemicals?

A. Yes Alexzander. The active ingredients in the common ADHD medications are amphetamines. The amphetamines artificially increase the amount of certain neurotransmitters in the brain, speeding up the brain (thus the term “speed” for amphetamines). This makes the frontal area more active, at least while the drug is acting.

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-

More discussions about chemical
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References in periodicals archive ?
Calling on adults to be careful when handling household chemicals, Asdariah recounted an incident last month in which a family member had stored dishwashing liquid in a little drink bottle which found its way to the fridge and was later consumed by someone else in the family.
Only buy what you need and never bury or burn household chemical containers or pour contents down the drain.
Target applications are 8-oz to 1.5L bottles for ketchup, mustard, cosmetics, and household chemicals. Two machines have already been sold in the U.S.
Need to get rid of some old household chemicals, safely?
Goldstein blamed the decline on "the increase in advertising of both our household chemical products and alpha hydroxy skin care products, which did not result in increased sales of the products over 2002; other income in 2002 from the settlement of a lawsuit and an income tax refund in 2002."
Household chemical waste disposal: By appointment Monday, March 26, SWALCO Gurnee Facility, 1311 N.
Method dish detergent was honored with the gold award under the household chemical category and features TricorBraun's custom-designed LDPE and MDPE bottle that dispenses product from the bottom using the Simpli Squeeze closure.
These machines produce food and household chemical containers from 8 oz to 170 oz for customers such as Procter & Gamble, Colgate Palmolive, Kraft Inc., Beatrice, and Ralston-Purina.
The Solid Waste Agency of Lake County will hold household chemical waste events Feb.
Household chemical waste drop-offs are available Saturday, Jan.

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