1. A nitrogenized substance of vegetable origin possessing in some degree the properties of an alkali.

2. Like an alkali.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• alkalose,
• alkalide,
• zlkaloid,
• slkaloid,
• wlkaloid,
• qlkaloid,
• akkaloid,
• apkaloid,
• aokaloid,
• aljaloid,
• almaloid,
• allaloid,
• aloaloid,
• alialoid,
• alcaloid,
• alkaloyd,
• alkaloial,
• alkaloida,
• rubaloid,
• mallacoid

• alkalic,
• alkaloidal,
• alkalinise,
• alkaline,
• algal,
• alkalise,
• alkalinize,
• alkaluria,
• alkalify,
• alkali,
• alkalinity,
• alkalemia,
• alkalize,
• alkalosis,
• alkalotic.

The adjective form of the word "alkaloid" is "alkaloidal".

The plural of the "alkaloid" can be the "alkaloids".

The singular of the "alkaloid" can be the "alkaloid".