1. (noun) (usually plural) a necessary commodity for which demand is constant

• staple

2. (adjective) reduced to the simplest and most significant form possible without loss of generality

• canonic
• canonical

3. (adjective) serving as a base or starting point

• introductory

1. (adjective) pertaining to or constituting a base or basis

• basal
• base
• elemental
• elementary
• primary
• fundamental
• rudimentary
• underlying
• grassroots
• radical

2. (adjective) reduced to the simplest and most significant form possible without loss of generality

• standard

3. (adjective) serving as a base or starting point

• first

4. (adjective) of or denoting or of the nature of or containing a base

• alkalic
• alkaline

1. (adjective) of or denoting or of the nature of or containing a base

• chemical science
• chemistry

1. (noun) a popular programming language that is relatively easy to learn; an acronym for beginner's all-purpose symbolic instruction code; no longer in general use

• programing language
• programming language

2. (noun) (usually plural) a necessary commodity for which demand is constant

• commodity
• good
• trade good

1. (adjective) pertaining to or constituting a base or basis

• incident
• incidental