EDerectile dysfunction (previously referred to as impotent)Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary EmbreeEDabbr.1. effective dose2. election district3. erectile dysfunctioned (?d)n. Informal Education: driver’s ed; adult ed.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.ed (?d) n. education: driver’s ed. [by shortening] ED 1. Department of Education. 2. effective dose. 3. erectile dysfunction. -ed1 , a suffix forming the past tense of weak verbs: He crossed the river. [Old English -de, -ede, -ode, -ade; orig. disputed] -ed2 , a suffix forming the past participle of weak verbs (he had crossed the river), and of participial adjectives indicating a condition or quality resulting from the action of the verb (inflated balloons). [Old English -ed, -od, -ad; orig. disputed] -ed3 , a suffix forming adjectives from nouns, typically specifying that the person or thing modified by the adjective possesses or is characterized by whatever is denoted by the noun base: bearded; diseased; layered. Such adjectives are often derived from adjective-noun or quantifier-noun phrases (black-haired ?having black hair?; three-headed ?having three heads?) or from more complex constructions (hourglass-shaped ?having the shape of an hourglass?). [Middle English; Old English -ede] ed. 1. edited. 2. pl. eds. edition. 3. pl. eds. editor. 4. education. E.D. election district. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.