addendum /ə-denˈdəm/

1. A thing to be added, such as supplementary material to a book, etc
2. The distance between the centre and the outer edge of a tooth on a gear or of the thread of a screw (engineering)

• thickety
• thick-eyed
• thick film
• thick films
• thick-grown
• thickhead
• thickheaded
• thickheadedness
• thickheads
• thickie
• thickies
• thicking
• thickish
• thick knee
• thick knees
• thick-lipped
• thick-lips
• thickly
• thickness
• thicknesses
• thicko
• tittuping
• tittupped
• tittupping
• tittups