MusicScale[{i_1, i_2, ...}, freq, dur] creates a Sound object that is a sequence of pitches corresponding to numbers i_1, i_2, ..., a list of intervals measured in cents, ...
Biharmonic[f] gives the biharmonic, \[Del]^4 f, of the scalar function f in the default coordinate system. Biharmonic[f, coordsys] gives the biharmonic of f in the coordinate ...
Axes
(Built-in Mathematica Symbol) Axes is an option for graphics functions that specifies whether axes should be drawn.
BarChart3D[{y_1, y_2, ...}] makes a 3D bar chart with bar lengths y_1, y_2, ....BarChart3D[{..., w_i[y_i, ...], ..., w_j[y_j, ...], ...}] makes a 3D bar chart with bar ...
CompilationTarget is an option for Compile that specifies the target runtime for the compiled function.
DepthFirstScan[g, s, {"event_1" -> f_1, "event_2" -> f_2, ...}] performs a depth-first scan of the graph g starting at the vertex s and evaluates f_i whenever "event_i" ...
EulerE
(Built-in Mathematica Symbol) EulerE[n] gives the Euler number E_n. EulerE[n, x] gives the Euler polynomial E_n (x).
ExponentialFamily is an option for GeneralizedLinearModelFit that specifies the exponential family for the model.
FrameStyle is an option for Graphics, Grid, and other constructs that specifies the style in which to draw frames.
GegenbauerC[n, m, x] gives the Gegenbauer polynomial C_n^(m)(x). GegenbauerC[n, x] gives the renormalized form lim_(m->0) C_n^(m)(x)/m.