10-Letter Words Containing: S,P,Y,R,E,_,_

• any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active

• a broad highway designed for high-speed traffic

• a plant spore formed by two similar sexual cells

• plant adapted for life with a limited supply of water; compare hydrophyte and mesophyte

• machine-readable text that is not sequential but is organized so that related items of information are connected

• any of numerous plants of the division Bryophyta

• any of various nonruminant hoofed mammals having very thick skin: elephant; rhinoceros; hippopotamus