<p>The precise control of electromagnetic wave behavior is essential for the development of next-generation photonic and communication devices. Metamaterials enable advanced wave manipulation through their unique electromagnetic properties. Among their key building blocks, metallic nanowires have been designed to dilute plasma frequency, a concept validated at microwave frequencies. Existing nanowire models face limitations; the quasi-static voltage-current models apply only to dipole-dominant nanoparticles, while wave impedance methods require infinite series expansion. These constraints highlight the need for a computationally efficient and physically intuitive modeling approach. This work introduces a cylindrical wave impedance framework at optical frequencies, deriving impedance expressions that simplify the dominant-mode resonance analysis under TE polarization by mapping it to a linear circuit model. The dominant mode is validated through simulations and Mie theory comparisons, ensuring accuracy. The proposed compact and intuitive model enhances understanding of wave-nanowire interactions, aiding the design of plasmonic and metamaterial-based applications. It also opens new avenues for the analytical treatment of complex nanostructures in both research and practical device engineering.</p>