By means of, or in terms of, affirmation.

(architecture) A little tower, frequently a merely ornamental structure at one of the corners of a building or castle.

(mathematics) A certain arithmetic function that is neither multiplicative nor additive. It is denoted by Λ(n) and defined as :𝛬(n)= log p mbox ifn=pᵏ mbox forsomeprimep mbox andintegerk>1,\0 mbox ...

Leucadendron argenteum, a tree with striking silvery leaves, endemic to a small area of the Cape Peninsula in South Africa.