'solid-linked' originates from the combination of 'solid' and 'linked', where 'solid' means 'firm and stable' and 'linked' means 'connected'.

'solid' and 'linked' have been used in English since the Middle Ages, and their combination into 'solid-linked' is a modern adaptation to describe a firm connection.

Initially, 'solid' and 'linked' were used separately to describe firmness and connection, respectively. Their combination into 'solid-linked' emphasizes a strong, stable connection.