Skip to Main Content

We have a new app!

Take the Access library with you wherever you go—easy access to books, videos, images, podcasts, personalized features, and more.

Download the Access App here: iOS and Android

oil red-O

A fat-soluble dye primarily used in microscopic tissue examination to highlight triglycerides.


(oynt′mĕnt) [Fr. oignement] A viscous, semisolid vehicle used to apply medicines to the skin. Ointments differ from creams or lotions in their superior ability to occlude the skin and improve the uptake of drugs. The base or vehicle of an ointment typically includes petrolatum, fats, oils, resins, or water-based or water-soluble compounds. SYN: salve; unguent.

hydrophilic o. An oil-in-water emulsion in the form of a standardized ointment preparation used topically as an emollient.


An immunosuppressive monoclonal antibody used in organ transplantation.


L. oleum, oil.


[(alcoh)ol or (phen)ol] Suffix used in chemical names for an alcohol or, occasionally, a phenol.


L. occipitolaeva anterior (fetal presentation). SYN: LOA. SEE: position.


An atypical antipsychotic agent used to treat psychosis and schizophrenia. It controls both the positive symptoms of schizophrenia (delusions, hallucinations) and the negative symptoms (passivity, blunted affect, social isolation). Extrapyramidal side effects are less commonly associated with the use of olanzapine than with conventional neuroleptic drugs, such as haloperidol. Common side effects include drowsiness, dizziness, and weight gain.

Older Americans Act

A U.S. law for provision of comprehensive services to older adults. The law created several networks and agencies on the federal, state, and local levels, e.g., the Administration on Aging (federal), state units on aging, and the Area Agency on Aging (local). Funding is provided for nutrition and supportive home and community-based services, disease prevention/health promotion services, elder rights programs, and other services. SEE: Area Agency on Aging; Administration on Aging.

Older Americans Resources and Services Scale—Instrumental Activities of Daily Living

ABBR: OARS-IADL. A modified activity of daily living assessment scale to quantify a person’s ability to perform tasks considered essential for community living. The seven tasks assessed are telephone use, traveling, shopping, preparing meals, performing housework, taking medications, and handling finances.


(ōld′ōld″) Over 85 years old.

Old World

The Eastern hemisphere. It is used in the biological sciences to distinguish plants, animals, and infections that live and thrive primarily in Africa, Asia, and Europe.


(ō′lē-ă) [L.] 1. Olive. 2. Pl. of oleum.


(ō′lē-ă ūr″ŏ-pē′ă) [L. olea europaea, European olive] The scientific name for the olive tree. Allergens in the fruit may cause anaphylaxis in susceptible individuals. Abbreviated Ole by the World Health Organization. SEE: olive oil....

Pop-up div Successfully Displayed

This div only appears when the trigger link is hovered over. Otherwise it is hidden from view.