In this study, the influence of moisture content, frequency, and temperature on the dielectric properties of linseeds were investigated. The moisture content significantly affected the dielectric properties of the linseed. As the moisture content increased, both εʹ and ε″ increased because of the enhanced mobility of the water molecules and the formation of polar clusters. The increased polarity facilitates the alignment of dipoles with the applied electric field, leading to a higher dielectric constant and loss. Frequency also strongly influenced the dielectric properties of the linseed. At lower frequencies, the dipoles had sufficient time to follow the oscillating electric field, resulting in higher εʹ and ε″ values. However, at higher frequencies, the dipoles cannot respond rapidly, leading to decrease in εʹ and ε″. This phenomenon is attributed to the interplay between the relaxation time of the dipoles and applied frequency. Temperature also plays a significant role in shaping the dielectric properties of linseed. With increasing temperature, the motion of the water molecules and other polar constituents intensifies, increasing both εʹ and ε″. This was attributed to the enhanced ease of polarization and increased conductivity of the material. Understanding these relationships is crucial for optimizing seed storage, processing, and quality control. Dielectric properties can be used to determine moisture content, monitor drying processes, assess quality, and optimize microwave heating.