| ⍀ | APL Function Symbol Circle Stile | APL programming | Operator Symbol | Function composition, flow | Air / Functional Path |
| ⍁ | APL Function Symbol Circle Bar | APL programming | Operator Symbol | Logical intersection | Earth / Intersection |
| ⍂ | APL Function Symbol Circle Dot | APL programming | Operator Symbol | Inner product operation | Fire / Synthesis |
| ⍃ | APL Function Symbol Circle Jot | APL programming | Operator Symbol | Scalar extension | Air / Extension |
| ⍄ | APL Function Symbol Circle Star | APL programming | Operator Symbol | Power, exponential function | Fire / Exponentiation |
| ⍅ | APL Function Symbol Circle Equals | APL programming | Operator Symbol | Equality assertion | Earth / Equality |
| ⍆ | APL Function Symbol Circle Slash | APL programming | Operator Symbol | Reduction operation | Water / Reduction |
| ⍇ | APL Function Symbol Circle Backslash | APL programming | Operator Symbol | Scan operation | Water / Accumulation |
| ⍈ | APL Function Symbol Circle Up Arrow | APL programming | Operator Symbol | Outer product | Air / Elevation |
| ⍉ | APL Function Symbol Circle Down Arrow | APL programming | Operator Symbol | Transpose | Air / Reorientation |
| ⍊ | APL Function Symbol Circle Left Arrow | APL programming | Operator Symbol | Leftward mapping | Earth / Return Flow |
| ⍋ | APL Function Symbol Circle Right Arrow | APL programming | Operator Symbol | Sorting or right mapping | Air / Order Flow |
| ⍌ | APL Function Symbol Circle Delta | APL programming | Operator Symbol | Difference function | Fire / Variation |
| ⍍ | APL Function Symbol Circle Nabla | APL programming | Operator Symbol | Gradient or divergence | Air / Gradient |
| ⍎ | APL Function Symbol Circle Overbar | APL programming | Operator Symbol | Negation or complement | Earth / Negation |
| ⍏ | APL Function Symbol Circle Underbar | APL programming | Operator Symbol | Logical floor | Earth / Foundation |
| ⍐ | APL Function Symbol Circle Up Tack | APL programming | Operator Symbol | Assertion of truth | Air / Affirmation |
| ⍑ | APL Function Symbol Circle Down Tack | APL programming | Operator Symbol | Assertion of falsehood | Earth / Null Assertion |
| ⍒ | APL Function Symbol Circle Star Dot | APL programming | Operator Symbol | Power with product | Fire / Powered Union |
| ⍓ | APL Function Symbol Circle Star Jot | APL programming | Operator Symbol | Exponential mapping | Fire / Growth Mapping |
| ⍔ | APL Function Symbol Circle Cross | APL programming | Operator Symbol | Cartesian product | Earth / Cross Union |
| ⍕ | APL Function Symbol Circle Slash Dot | APL programming | Operator Symbol | Filter and reduce | Water / Selective Flow |
| ⍖ | APL Function Symbol Circle Backslash Dot | APL programming | Operator Symbol | Filter and accumulate | Water / Selective Build |
| ⍗ | APL Function Symbol Circle Quad | APL programming | Operator Symbol | Box or encapsulate | Earth / Containment |
| ⍘ | APL Function Symbol Circle Diamond | APL programming | Operator Symbol | Selection from set | Air / Choice |
| ⍙ | APL Function Symbol Circle Triangle | APL programming | Operator Symbol | Incremental growth | Fire / Expansion |
| ⍚ | APL Function Symbol Circle Inverted Triangle | APL programming | Operator Symbol | Contraction | Water / Reduction |
| ⍛ | APL Function Symbol Circle Square | APL programming | Operator Symbol | Structural block | Earth / Form |
| ⍜ | APL Function Symbol Circle Pentagon | APL programming | Operator Symbol | Iterative loop | Spirit / Cycle |
| ⍝ | APL Function Symbol Circle Hexagon | APL programming | Operator Symbol | Multiway connection | Spirit / Network |
| ⍞ | APL Function Symbol Circle Octagon | APL programming | Operator Symbol | Bound network | Spirit / Bound Structure |
| ⍟ | APL Function Symbol Circle Starburst | APL programming | Operator Symbol | Event trigger | Fire / Initiation |
| ⍠ | APL Function Symbol Circle Tilde | APL programming | Operator Symbol | Negation mapping | Air / Opposition Flow |
| ⍡ | APL Function Symbol Circle Dagger | APL programming | Operator Symbol | Critical action | Fire / Strike |
| ⍢ | APL Function Symbol Circle Double Dagger | APL programming | Operator Symbol | Repeated critical action | Fire / Reiteration |
| ⍣ | APL Function Symbol Circle Plus | APL programming | Operator Symbol | Additive mapping | Earth / Addition |
| ⍤ | APL Function Symbol Circle Minus | APL programming | Operator Symbol | Subtractive mapping | Earth / Subtraction |
| ⍥ | APL Function Symbol Circle Times | APL programming | Operator Symbol | Multiplicative mapping | Fire / Multiplication |
| ⍦ | APL Function Symbol Circle Divide | APL programming | Operator Symbol | Division mapping | Water / Division Flow |
| ⍧ | APL Function Symbol Circle Equal | APL programming | Operator Symbol | Equality mapping | Earth / Equality Flow |
| ⍨ | APL Function Symbol Circle Greater | APL programming | Operator Symbol | Comparison mapping | Air / Ascend Compare |
| ⍩ | APL Function Symbol Circle Less | APL programming | Operator Symbol | Comparison mapping | Earth / Descend Compare |
| ⍪ | APL Function Symbol Circle Greater Equal | APL programming | Operator Symbol | Inclusive comparison | Air / Inclusion |
| ⍫ | APL Function Symbol Circle Less Equal | APL programming | Operator Symbol | Inclusive comparison | Earth / Inclusion |
| ⍬ | APL Function Symbol Circle Empty | APL programming | Operator Symbol | Null, empty array | Spirit / Void |
| ⍭ | APL Function Symbol Circle Full | APL programming | Operator Symbol | Complete array | Spirit / Fullness |
| ⍮ | APL Function Symbol Circle Infinity | APL programming | Operator Symbol | Unbounded value | Spirit / Infinity |
| ⍯ | APL Function Symbol Circle Dotbar | APL programming | Operator Symbol | Marked product | Fire / Tagged Union |
| ⍰ | APL Function Symbol Circle Question | APL programming | Operator Symbol | Query, request | Air / Inquiry |
| ⍱ | Logical NOR | Logic circuits | Logic Symbol | Neither/nor logic | Earth / Null Logic |
| ⍲ | Logical NAND | Logic circuits | Logic Symbol | Negated conjunction | Air / Gate Inversion |
| ⍳ | APL Iota | APL programming | Operator Symbol | Sequence generation | Fire / Ordinal Growth |
| ⍴ | APL Rho | APL programming | Operator Symbol | Reshape array | Earth / Restructure |
| ⍵ | APL Omega | APL programming | Operator Symbol | Right argument marker | Spirit / Right Context |
| ⍶ | APL Alpha | APL programming | Operator Symbol | Left argument marker | Spirit / Left Context |
| ⍷ | APL Epsilon Underbar | APL programming | Operator Symbol | Element of | Water / Membership |
| ⍸ | APL Iota Underbar | APL programming | Operator Symbol | Index of | Earth / Location |
| ⍹ | APL Omega Underbar | APL programming | Operator Symbol | Right context alternate | Spirit / Alternate Context |
| ⍺ | APL Alpha Underbar | APL programming | Operator Symbol | Left context alternate | Spirit / Alternate Context |
| ⍻ | APL Not Equal | APL programming | Operator Symbol | Inequality | Air / Opposition |
| ⍼ | APL Equal Underbar | APL programming | Operator Symbol | Equality under condition | Earth / Conditional Equality |
| ⍽ | APL Diamond Underbar | APL programming | Operator Symbol | Special selection | Air / Conditional Choice |
| ⍾ | APL Circle Underbar | APL programming | Operator Symbol | Underlined mapping | Air / Mapping Variant |
| ⍿ | APL Star Underbar | APL programming | Operator Symbol | Underlined power | Fire / Power Variant |
