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Webster's 1913 Dictionary

PARASTICHY

Pa *ras "ti *chy, n. Etym: [Pref. para- + Gr. (Bot. )

Defn: A secondary spiral in phyllotaxy, as one of the evident spirals in a pine cone.

New American Oxford Dictionary

parastichy

pa ras ti chy |pəˈrastikē pəˈræstəki | ▶noun ( pl. parastichies ) Botany (in phyllotaxis ) an oblique row of leaves arranged in a secondary spiral. Contrasted with orthostichy. ORIGIN late 19th cent.: from para- 1 ‘adjacent ’ + Greek stikhos ‘row, rank. ’

Oxford Dictionary

parastichy

parastichy |pəˈrastɪki | ▶noun ( pl. parastichies ) Botany (in phyllotaxis ) an oblique row of leaves arranged in a secondary spiral. Contrasted with orthostichy. ORIGIN late 19th cent.: from para- 1 ‘adjacent ’ + Greek stikhos ‘row, rank ’.