divaricate
Concise Oxford English Dictionary © 2008 Oxford University Press:
divaricate /dʌɪˈvarɪkeɪt, dɪ-/
▶verb technical or literary stretch or spread apart. ▶adjective Botany (of a branch) coming off the stem almost at a right angle.
– derivatives
divarication noun.
divarication noun.
– origin C17: from L. divaricat-, divaricare ‘stretch apart’.
'divaricate' also found in these Oxford entries:

