any of numerous plants of the genus Selaginella, allied to and resembling the club mosses.
noun 1. an aromatic, Indian plant, Nardostachys jatamansi, of the valerian family, believed to be the nard of the ancients. 2. an aromatic substance used by the ancients, supposed to be obtained from this plant. 3. any of various other plants, especially an American plant, Aralia racemosa, of the ginseng family, having an aromatic root. […]
- Spike potential
spike potential n. The main wave in the action potential of a nerve that is followed by negative and positive afterpotentials.
noun 1. a pointed, perforated tube connected to a garden hose, pushed into the soil for deep watering. 2. Volleyball. a player who spikes the ball.
noun 1. any perennial plant of the temperate cyperaceous genus Eleocharis, occurring esp by ponds, and having underground stems, narrow leaves, and small flowers