photoelectron/ˌfohtoh·iʹlektron/ noun

• sphygmograph
• sphygmomanometer
• spic
• spic-and-span
• spiccato
• spice
• spicebush
• spick-and-span
• spicule
• spicy
• spider
• spider crab
• spider mite
• spider monkey
• spider plant
• spiderwort
• spidery
• spiegeleisen
• spiel
• spiffing
• spifflicate
• spiffy
• spigot
• spike
• spiked