Definition of valvate in English:

valvate

adjective

Botany
  • (of sepals or other parts) having adjacent edges abutting rather than overlapping.

    Compare with imbricate
    • ‘The perianth is commonly uniseriate, consisting of 3-5 valvate, basally connate sepals, but sometimes an equal number of petals are also present.’
    • ‘If buds are present, it is easy to distinguish the valvate, bright yellow buds of Carya cordiformis from the other Carya species, which have ovate buds with overlapping brown scales.’
    • ‘Terminal buds bear imbricate, scaly buds except in the bitternut hickory which has valvate or foliate buds.’
    • ‘The flowers display valvate, distinct, or connate sepals and petals.’
    • ‘The petals have very brief valvate apices.’

Origin

Early 19th century: from Latin valvatus having folding doors from valva valve.

Pronunciation:

valvate

/ˈvalvāt/