Lesson 25 Greek combining forms

astro	+ naut	= astronaut	dia	+ gram	= diagram
astro	+ logy	= astrology	mono	+ gram	= monogram
eco	+ logy	= ecology	tele	+ gram	= telegram
bio	+ logy	= biology	tele	+ photo	= telephoto
mytho	+ logy	= mythology	photo	+ graph	= photograph
peri	+ scope	= periscope	syn	+ onym	= synonym
peri	+ meter	= perimeter	hom	+ onym	= homonym
thermo	+ meter	= thermometer	aristo	+ cracy	= aristocracy
dia	+ meter	= diameter	demo	+ cracy	= democracy

Look at the Greek combining forms before they are joined to make words.

1.	How many combining forms are used more than once? _____
2.	Which combining form begins and ends words? __________

Lesson Generalization Greek word parts can be combined in different ways to make English words. They are joined in almost the same way as English words are joined to make compound words: telephoto/photograph       touchdown/downstairs (combined word parts)      (compound words) Knowing the meaning of the separate parts will help you to understand the many words made by combining the parts.

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Grade 6 Spelling SkillBuilders