July 23, 2015 â Teens using marijuana for medical reasons are 10 times more likely to say they are hooked on marijuana than youth who get marijuana illegally, a new study shows. The study is the first to report on a ... Slow to Mature, Quick to Distract: ADHD Brain Study Finds Slower Development of Key Connections.
Define prehistoric. prehistoric synonyms, prehistoric pronunciation, prehistoric translation, English dictionary definition of prehistoric. also preÂ·hisÂ·torÂ·iÂ·cal adj. 1. Of, relating to, or belonging to the era before recorded history. 2. Of or relating to a language before it is first recorded...
Meaning: A long narrow excavation in the earth. Classified under: Nouns denoting man-made objects. Hypernyms (ditch is a kind of...): excavation (a hole in the ground made by excavating) Hyponyms (each of the following is a kind of ditch): drainage ditch (a ditch for carrying off excess water or sewage) irrigation ditch (a ditch to supply dry land with water artificially) ha-ha; haw-haw; sunk fence (a ditch with one side being a retaining wall; used to divide lands without defacing the landscape)