mess aroundverb trans and intrans

• echin-
• echinacea
• echini
• echino-
• echinoderm
• echinoid
• echinus
• echo
• echocardiography
• echo chamber
• echogram
• echography
• echoic
• echolalia
• echolocation
• echo sounder
• echovirus
• echt
• eclampsia
• eclectic
• eclipse
• eclipse plumage
• eclipsing binary
• eclipsing variable
• ecliptic