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.
Influence is the ability to persuade someone to think or act in the way you want. This ability is an essential part of leadership. After all, someone who can't convince people of things isn't a leader--no one is following him or her. Therefore, it's important for an effective leader to understand influence.