ed

noun Informal.

1. education: a course in driver’s ed; adult ed.

noun

1. a male given name, form of Edgar or Edward.

1. Department of Education.
2. Pathology. erectile dysfunction.

1. edited.
2. plural eds. edition.
3. plural eds. editor.
4. education.

Pharmacology.

1. effective dose for 50 percent of the group; the amount of a drug that is therapeutic in 50 percent of the persons or animals in which it is tested.

1. a suffix forming the past tense of weak verbs: he crossed the river.

1. 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).

1. a suffix forming adjectives from nouns: bearded; monied; tender-hearted.

1. Eastern Department.
2. election district.
3. ex dividend.
4. executive director.

abbreviation for

1. edited
2. plural eds edition
3. plural eds editor

suffix

1. forming the past tense of most English verbs

suffix

1. forming the past participle of most English verbs

suffix forming adjectives

1. possessing or having the characteristics ofsalaried; red-blooded

past participle suffix of weak verbs, from Old English -ed, -ad. –od (leveled to -ed in Middle English), from Proto-Germanic *-do- (cf. Old High German -ta, German -t, Old Norse -þa, Gothic -da, -þs), from PIE *-to- (cf. Sanskrit -tah, Greek -tos, Latin -tus).

Originally fully pronounced, as still in beloved (which, with blessed, accursed, and a few others retains the full pronunciation through liturgical readings). In 16c.-18c. often written -t when so pronounced (usually after a consonant or short vowel), and still so where a long vowel in the stem is short in the pp. (e.g. crept, slept, etc.). In some older words both forms exist, with different shades of meaning, e.g. gilded/gilt, burned/burnt.

abbr.

1. effective dose
2. erectile dysfunction