PORPHYRIN
\pˈɔːfɪɹˌɪn], \pˈɔːfɪɹˌɪn], \p_ˈɔː_f_ɪ_ɹ_ˌɪ_n]\
Word of the day
Aerocurve
- A modification of the aeroplane, having curved surfaces, advantages which were first demonstrated by Lilienthal.