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amphiphloic

adjective
am·​phi·​phlo·​ic | \¦amfə̇¦flōik\

Definition of amphiphloic 

: having phloem both internal and external to the xylem —used of the siphonostele of certain vascular plants — compare ectophloic

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First Known Use of amphiphloic

1899, in the meaning defined above

History and Etymology for amphiphloic

amphi- + phloem + -ic

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The first known use of amphiphloic was in 1899

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