4 letter word starting with ac

Words Parts of Speech Meaning/Definition/Similar Words
aces plural of Ace
ache noun A name given to several species of plants; as, smallage, wild celery, parsley., Continued pain, as distinguished from sudden twinges, or spasmodic pain. “Such an ache in my bones.”, To suffer pain; to have, or be in, pain, or in continued pain; to be distressed.
acid adjective Sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits or liquors. Also fig.: Sour-tempered., Of or pertaining to an acid; as, acid reaction., A sour substance., One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids.
acme noun The top or highest point; the culmination., The crisis or height of a disease., Mature age; full bloom of life.
acne noun A pustular affection of the skin, due to changes in the sebaceous glands.
acre noun Any field of arable or pasture land., A piece of land, containing 160 square rods, or 4,840 square yards, or 43,560 square feet. This is the English statute acre. That of the United States is the same. The Scotch acre was about 1.26 of the English, and the Irish 1.62 of the English.