1. Chemistry(Material Noun-Neuter) a group of naturally occurring chemical compounds which mostly contain basic nitrogen atoms. This group also includes some related compounds with neutral and even weakly acidic properties. Also some synthetic compounds of similar structure are attributed to alkaloids. In addition to carbon, hydrogen and nitrogen, alkaloids may also contain oxygen, sulfur and more rarely other elements such as chlorine, bromine and phosphorus. মূলতঃ নাইট্ৰোজেন যুক্ত খাৰকীয় গুণযুক্ত ৰাসায়ণিক যৌগ।

English: alkaloid,
Assamese: উপক্ষাৰ