unbehōlˈden adjective

1. Unseen
2. Under no obligation of gratitude

• electron lenses
• electron micrograph
• electron micrographs
• electron microscope
• electron microscopes
• electron optics
• electron pair
• electron pairs
• electron probe
• electron probes
• electron ring accelerator
• electron ring accelerators
• electrons
• electron shell
• electron shells
• electron telescope
• electron telescopes
• electron tube
• electron tubes
• electronvolt
• electronvolts
• electronystagmography
• electro-optic
• electro-optical
• electro-optical effect