What does "hendersonian" mean?

Of or relating to anybody with the surname Henderson.

How do you pronounce "hendersonian"?

Pronounced //ˌhɛn.dəˈsəʊ.ni.ən//.

/ˌhɛn.dəˈsəʊ.ni.ən/ adj

adj ·Rare ·Advanced level

Adjective

From Henderson + -ian.