sfenisko
jackass penguin

sfenoido
sphenoid

sfera koordinato
spherical coordinate

sfera
spherical

sferdisko
spherical layer

sferforma
spherical

sfero
ball, sphere

sfigmomanometro
blood pressure machine, sphygmomanometer

sfingo
hawk-moth

sfinksa
mysterious, sphnix-like

sfinkso
sphinx

sfinktero
sphincter