talking-tonoun (pl talking-tos)

• spermatogonium
• spermatophore
• spermatophyte
• spermatozoid
• spermatozoon
• sperm bank
• sperm count
• spermicide
• spermo-
• sperm oil
• sperm whale
• spew
• SPF
• sp. gr.
• sphagnum
• sphalerite
• sphene
• sphenoid
• sphere
• -sphere
• spherical
• spherical aberration
• spherical angle
• spherical coordinate
• spheroid