Length (L):

• Symbol: �L
• Definition: Length is the extent of an object or space in one dimension. It is measured in meters (m).

Mass (M):

• Symbol: �M
• Definition: Mass is the amount of matter in an object. It is measured in kilograms (kg).

Time (T):

• Symbol: �T
• Definition: Time is the progression of events from the past to the present and into the future. It is measured in seconds (s).

Electric Current (I):

• Symbol: �I
• Definition: Electric current is the flow of electric charge through a conductor. It is measured in amperes (A).

Temperature (Θ):

• Symbol: ΘΘ
• Definition: Temperature is a measure of the average kinetic energy of particles in a substance. It is measured in kelvin (K).

Amount of Substance (N):

• Symbol: �N
• Definition: Amount of substance is a measure of the number of particles (atoms, molecules, ions, etc.) in a substance. It is measured in moles (mol).

Luminous Intensity (J):

• Symbol: �J
• Definition: Luminous intensity is a measure of the quantity of visible light emitted or received from a source in a particular direction. It is measured in candela (cd).