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equitangential
equitangential adj. 
/ˌɛkwᵻtanˈdʒɛn(t)ʃl/, /ˌɛkwiˌtænˈdʒɛn(t)ʃ(ə)l/, /ˌikwəˌtænˈdʒɛn(t)ʃ(ə)l/, /ˌikwiˌtænˈdʒɛn(t)ʃ(ə)l/ having a tangent equal to a constant line; said of a certain curve.
Brit. /ˌiːkwᵻtanˈdʒɛn(t)ʃl/
, /ˌiːkwᵻtanˈdʒɛn(t)ʃl//ˌɛkwᵻtanˈdʒɛn(t)ʃl/U.S. /ˌɛkwəˌtænˈdʒɛn(t)ʃ(ə)l/
, /ˌɛkwəˌtænˈdʒɛn(t)ʃ(ə)l//ˌɛkwiˌtænˈdʒɛn(t)ʃ(ə)l//ˌikwəˌtænˈdʒɛn(t)ʃ(ə)l//ˌikwiˌtænˈdʒɛn(t)ʃ(ə)l/ΚΠ
1716 A. de Moivre in Philos. Trans. 1714–16 (Royal Soc.) 29 334 The Curve A C B may..be call'd the Equitangential Curve.
1871 Olney Geom. xiii. 172 The..Equitangential Curve is generated by the motion of a weight, etc.
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