polttimoihin

Polttimoihin is the illative plural form of the Finnish noun polttimo. It is used to indicate movement into or installation into multiple devices that produce light, such as light sources or bulbs, in contexts ranging from instructions to technical descriptions.

In Finnish, polttimo has several related senses tied to light production. Traditionally it can refer to a component that burns or glows within a lamp, such as a filament or other luminous element. In contemporary usage, polttimo is sometimes used to refer to a light bulb more broadly, though lamppu remains the more common everyday term. The word appears more often in technical, historical, or specialized language, and is frequently encountered in product specifications, manuals, and DIY guides, especially when discussing replacing or upgrading light sources.

Polttimoihin is most commonly found in sentences that describe actions related to multiple bulbs, such as installation or replacement. Examples include phrases like “Vaihda polttimoihin LED-polttimot” (replace with LED bulbs) or “Asenna polttimoihin uudet polttimot” (install new bulbs). The illative form signals the target of the action—into or to the bulbs.

Etymologically, polttimo derives from the root related to burning or combustion, reflecting its historical association with glowing or burning elements inside lighting devices.

See also: lamppu, poltin, LED-polttimo, valaisin.