septi-

1. a combining form meaning “seven,” used in the formation of compound words:

   septilateral.

septi-

¹

combining_form

1. seven

   septivalent

septi-

²

combining_form

1. septum

   septicidal

Word History and Origins

Origin of septi-¹

from Latin septem

Example Sentences

"It was quite strong," a Bengkulu agency official, Septi, said.

From Reuters

Minutes before the ambulance arrived, Septi Eka Saputra had left.

From Washington Times

Minutes before the ambulance arrived, Septi Eka Saputra had left.

From Seattle Times

“I am so wary. I work underneath the bridge,” said Nur Septi Febriananda, a receptionist, referring to another part of the same mezzanine floor that fell.

From Reuters

“I am so wary. I work underneath the bridge,” said Nur Septi Febriananda, a receptionist, referring to another part of the same mezzanine floor that fell.

From Reuters

Words That Use septi-

What does septi- mean?

Septi– is a combining form used like a prefix meaning “seven.” It is occasionally used in scientific and technical terms. In terms from medical and biological science, septi– denotes “septum,” meaning “a dividing wall or membrane in a plant or animal structure.”

Septi– comes from Latin septem, meaning “seven.” The Greek cognate of septem is heptá, meaning “seven,” which is the source of terms such as heptagon, a seven-sided polygon. To learn more, read our Words That Use article on the combining form hepta-.

Examples of septi-

One example of a scientific term that features the form septi– is septivalent, also known as heptavalent, “having a valence of seven.”

The septi– part of the word here means “seven.” The form -valent means “having a valence,” from Latin valent-, literally meaning “being strong.” Septivalent literally translates to “having a valence of seven.”

What are some words that use the combining form septi-?

• septichord
• septicolored
• septifolious
• septifronted
• septisyllable

What are some other forms that septi– may be commonly confused with?

• semi-
• septico-
• sesqui-

Break it down!

Given the meaning of septi-, what does septisyllable mean?