epigeal：生长在地上的，贴地生长的，浅水生长的

词根词缀：epi-在…之上 + -ge-地 + -al形容词词尾

• opaque
• op art
• op.cit.
• op-ed
• open
• opencast
• open-ended
• opener
• opening
• openness
• open sesame
• open slather
• opera
• operability
• operable
• operand
• operate
• operatic
• operation
• operational
• operative
• operatize
• operator
• operetta
• operose