| • | Of or pertaining to the root; proceeding directly from the
   root. | 
											
															| • | Hence: Of or pertaining to the root or origin; reaching to
   the center, to the foundation, to the ultimate sources, to the
   principles, or the like; original; fundamental; thorough-going;
   unsparing; extreme; as, radical evils; radical reform; a radical party. | 
											
															| • | Belonging to, or proceeding from, the root of a plant; as,
   radical tubers or hairs. | 
											
															| • | Proceeding from a rootlike stem, or one which does not
   rise above the ground; as, the radical leaves of the dandelion and the
   sidesaddle flower. | 
											
															| • | Relating, or belonging, to the root, or ultimate source of
   derivation; as, a radical verbal form. | 
											
															| • | Of or pertaining to a radix or root; as, a radical
   quantity; a radical sign. See below. | 
											
															| • | A primitive word; a radix, root, or simple, underived,
   uncompounded word; an etymon. | 
											
															| • | A primitive letter; a letter that belongs to the radix. | 
											
															| • | One who advocates radical changes in government or social
   institutions, especially such changes as are intended to level class
   inequalities; -- opposed to conservative. | 
											
															| • | A characteristic, essential, and fundamental constituent
   of any compound; hence, sometimes, an atom. | 
											
															| • | Specifically, a group of two or more atoms, not completely
   saturated, which are so linked that their union implies certain
   properties, and are conveniently regarded as playing the part of a
   single atom; a residue; -- called also a compound radical. Cf. Residue. | 
											
															| • | A radical quantity. See under Radical, a. | 
											
															| • | A radical vessel. See under Radical, a. |