recurvation


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re·curve

 (rē-kûrv′)
tr. & intr.v. re·curved, re·curv·ing, re·curves
To curve (something) backward or downward or become curved backward or downward.

[Latin recurvāre : re-, re- + curvāre, to curve (from curvus, curve; see curve).]

re′cur·va′tion (rē′kûr-vā′shən) n.
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References in periodicals archive ?
Among these transformations are aggregation, fusion, overtopping, reduction, recurvation (Fig.
These are: pseudomonopodial or monopodial branching; a basically helical arrangement of branches; small, "pinnulelike" vegetative branches (non-planate in basal taxa); recurvation of branch apices; sporangia in pairs grouped into terminal trusses; and multicellular appendages (spines).