philadelphus noun. [fɪlǝ'dɛlfǝs] L18.
[mod. Latin (see below), from Greek philadelphos loving one's brother (formed as PHILO- + adelphos brother), used as a plant-name.]
Any of various European or N. American shrubs constituting the genus Philadelphus, of the hydrangea family, with white flowers having the scent of orange blossom (also called mock orange); esp. (any of the hybrids of) P. coronarius, grown in gardens (also called syringa).

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