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NU 601: Nursing Theory

Resources about nursing theory and theorists

Online Dictionaries

The Lexico-Oxford Dictionary includes information on word origin.

Medical Dictionaries

How to cite dictionary term in APA format (from online dictionary)

Word. (Year of Publication). Title. URL


Merriam-Webster. (n.d.). Compassion. In dictionary. Retrieved January 4, 2020, from

Cite in text as:

("Compassion," n.d.)

Note: Although the online dictionary lists the copyright date at the bottom of the website page, this changes each year and refers to copyright on the entire website. It is there for legal purposes and does not indicate when individual dictionary entries were published.  It is for this reason that we use n.d. to represent no date.

MedlinePlus: Understanding Medical Words Tutorial