Patient Handouts. 1  Acute coronary syndrome (Medical Encyclopedia) Also in Spanish. 2  Angioplasty and stent - heart - discharge (Medical Encyclopedia) Also in Spanish. 3  Angioplasty and stent placement - heart (Medical Encyclopedia) Also in Spanish. 4  Coronary angiography (Medical Encyclopedia) Also in Spanish.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  influential(Noun) A person who has influence. 2  influential(Adjective) Having or exerting influence. John Lennon was a very influential person in music, as well as in politics, fashion and general culture.
The definition of affect means to produce a change in something. An example of affect is severe weather conditions drowning a vast number of crops on a farm.ransitive verb. 1  To have an influence on or effect a change in: Inflation affects the buying power of the dollar. 2  To act on the emotions of; touch or move. 3  To attack or infect, as a disease: Rheumatic fever can affect the heart.